140730769 has 3 divisors (see below), whose sum is σ = 140742633. Its totient is φ = 140718906.

The previous prime is 140730757. The next prime is 140730773. The reversal of 140730769 is 967037041.

The square root of 140730769 is 11863.

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.

It is not a de Polignac number, because 140730769 - 2⁹ = 140730257 is a prime.

It is a super-2 number, since 2×140730769² = 39610298686662722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140730719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5932 + ... + 17794.

It is an arithmetic number, because the mean of its divisors is an integer number (46914211).

Almost surely, 2^140730769 is an apocalyptic number.

140730769 is the 11863-rd square number.

140730769 is the 5932-nd centered octagonal number.

It is an amenable number.

140730769 is a deficient number, since it is larger than the sum of its proper divisors (11864).

140730769 is an frugal number, since it uses more digits than its factorization.

140730769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23726 (or 11863 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 37.

The cubic root of 140730769 is about 520.1512984298.

The spelling of 140730769 in words is "one hundred forty million, seven hundred thirty thousand, seven hundred sixty-nine".