429431387 has 16 divisors (see below), whose sum is σ = 545501952. Its totient is φ = 328305120.

The previous prime is 429431363. The next prime is 429431423. The reversal of 429431387 is 783134924.

It is not a de Polignac number, because 429431387 - 2¹⁴ = 429415003 is a prime.

It is a super-2 number, since 2×429431387² = 368822632281487538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (429431347) 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, 48533 + ... + 56694.

It is an arithmetic number, because the mean of its divisors is an integer number (34093872).

Almost surely, 2^429431387 is an apocalyptic number.

429431387 is a deficient number, since it is larger than the sum of its proper divisors (116070565).

429431387 is a wasteful number, since it uses less digits than its factorization.

429431387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105298.

The product of its digits is 145152, while the sum is 41.

The square root of 429431387 is about 20722.7263409041. The cubic root of 429431387 is about 754.4513869004.

The spelling of 429431387 in words is "four hundred twenty-nine million, four hundred thirty-one thousand, three hundred eighty-seven".