454639779 has 12 divisors (see below), whose sum is σ = 716402232. Its totient is φ = 275539200.

The previous prime is 454639741. The next prime is 454639811. The reversal of 454639779 is 977936454.

It is a happy number.

454639779 is a `hidden beast` number, since 4 + 546 + 3 + 97 + 7 + 9 = 666.

It is not a de Polignac number, because 454639779 - 2⁷ = 454639651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (454639079) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2296062 + ... + 2296259.

It is an arithmetic number, because the mean of its divisors is an integer number (59700186).

Almost surely, 2^454639779 is an apocalyptic number.

454639779 is a deficient number, since it is larger than the sum of its proper divisors (261762453).

454639779 is a wasteful number, since it uses less digits than its factorization.

454639779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4592338 (or 4592335 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 54.

The square root of 454639779 is about 21322.2836253531. The cubic root of 454639779 is about 768.9341406201.

The spelling of 454639779 in words is "four hundred fifty-four million, six hundred thirty-nine thousand, seven hundred seventy-nine".