769452121 has 3 divisors (see below), whose sum is σ = 769479861. Its totient is φ = 769424382.

The previous prime is 769452119. The next prime is 769452149. The reversal of 769452121 is 121254967.

The square root of 769452121 is 27739.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 121254967 = 79 ⋅1534873.

It is not a de Polignac number, because 769452121 - 2¹ = 769452119 is a prime.

It is a super-2 number, since 2×769452121² = 1184113133022797282, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (769452221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 13870 + ... + 41608.

It is an arithmetic number, because the mean of its divisors is an integer number (256493287).

Almost surely, 2^769452121 is an apocalyptic number.

769452121 is the 27739-th square number.

769452121 is the 13870-th centered octagonal number.

It is an amenable number.

769452121 is a deficient number, since it is larger than the sum of its proper divisors (27740).

769452121 is an frugal number, since it uses more digits than its factorization.

769452121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55478 (or 27739 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The cubic root of 769452121 is about 916.3482055114.

The spelling of 769452121 in words is "seven hundred sixty-nine million, four hundred fifty-two thousand, one hundred twenty-one".