427429657 has 16 divisors (see below), whose sum is σ = 459043200. Its totient is φ = 396576000.

The previous prime is 427429621. The next prime is 427429679. The reversal of 427429657 is 756924724.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-427429657 is a prime.

It is a super-2 number, since 2×427429657² = 365392223366275298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427429687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 464644 + ... + 465562.

It is an arithmetic number, because the mean of its divisors is an integer number (28690200).

Almost surely, 2^427429657 is an apocalyptic number.

It is an amenable number.

427429657 is a deficient number, since it is larger than the sum of its proper divisors (31613543).

427429657 is a wasteful number, since it uses less digits than its factorization.

427429657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296.

The product of its digits is 846720, while the sum is 46.

The square root of 427429657 is about 20674.3719856251. The cubic root of 427429657 is about 753.2773067469.

The spelling of 427429657 in words is "four hundred twenty-seven million, four hundred twenty-nine thousand, six hundred fifty-seven".