1254409979 has 8 divisors (see below), whose sum is σ = 1280767488. Its totient is φ = 1228277160.

The previous prime is 1254409973. The next prime is 1254410029. The reversal of 1254409979 is 9799044521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1254409979 - 2²⁴ = 1237632763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1254409973) 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 7 ways as a sum of consecutive naturals, for example, 44867 + ... + 67244.

It is an arithmetic number, because the mean of its divisors is an integer number (160095936).

Almost surely, 2^1254409979 is an apocalyptic number.

1254409979 is a deficient number, since it is larger than the sum of its proper divisors (26357509).

1254409979 is a wasteful number, since it uses less digits than its factorization.

1254409979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112345.

The product of its (nonzero) digits is 816480, while the sum is 50.

The square root of 1254409979 is about 35417.6506702520. The cubic root of 1254409979 is about 1078.4826597428.

The spelling of 1254409979 in words is "one billion, two hundred fifty-four million, four hundred nine thousand, nine hundred seventy-nine".