90629131 has 4 divisors (see below), whose sum is σ = 94569552. Its totient is φ = 86688712.

The previous prime is 90629129. The next prime is 90629153. The reversal of 90629131 is 13192609.

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 90629131 - 2¹ = 90629129 is a prime.

It is a super-2 number, since 2×90629131² = 16427278771630322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90629093 and 90629102.

It is not an unprimeable number, because it can be changed into a prime (90629171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1970176 + ... + 1970221.

It is an arithmetic number, because the mean of its divisors is an integer number (23642388).

Almost surely, 2^90629131 is an apocalyptic number.

90629131 is a deficient number, since it is larger than the sum of its proper divisors (3940421).

90629131 is a wasteful number, since it uses less digits than its factorization.

90629131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3940420.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 90629131 is about 9519.9333506070. The cubic root of 90629131 is about 449.1822696706.

The spelling of 90629131 in words is "ninety million, six hundred twenty-nine thousand, one hundred thirty-one".