90429739472 has 20 divisors (see below), whose sum is σ = 175311162180. Its totient is φ = 45188149248.

The previous prime is 90429739451. The next prime is 90429739507. The reversal of 90429739472 is 27493792409.

It can be written as a sum of positive squares in 2 ways, for example, as 69571447696 + 20858291776 = 263764^2 + 144424^2 .

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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, 1642097 + ... + 1696272.

It is an arithmetic number, because the mean of its divisors is an integer number (8765558109).

Almost surely, 2^90429739472 is an apocalyptic number.

It is an amenable number.

90429739472 is a deficient number, since it is larger than the sum of its proper divisors (84881422708).

90429739472 is a wasteful number, since it uses less digits than its factorization.

90429739472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340070 (or 3340064 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 56.

The spelling of 90429739472 in words is "ninety billion, four hundred twenty-nine million, seven hundred thirty-nine thousand, four hundred seventy-two".