429897631 has 4 divisors (see below), whose sum is σ = 432783000. Its totient is φ = 427012264.

The previous prime is 429897619. The next prime is 429897641. The reversal of 429897631 is 136798924.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 429897631 - 2¹⁵ = 429864863 is a prime.

It is a super-2 number, since 2×429897631² = 369623946278824322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (429897641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1442461 + ... + 1442758.

It is an arithmetic number, because the mean of its divisors is an integer number (108195750).

Almost surely, 2^429897631 is an apocalyptic number.

429897631 is a deficient number, since it is larger than the sum of its proper divisors (2885369).

429897631 is a wasteful number, since it uses less digits than its factorization.

429897631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2885368.

The product of its digits is 653184, while the sum is 49.

The square root of 429897631 is about 20733.9728706295. The cubic root of 429897631 is about 754.7243301579.

The spelling of 429897631 in words is "four hundred twenty-nine million, eight hundred ninety-seven thousand, six hundred thirty-one".