90421549029 has 48 divisors (see below), whose sum is σ = 151122965760. Its totient is φ = 51028496640.

The previous prime is 90421548983. The next prime is 90421549037. The reversal of 90421549029 is 92094512409.

90421549029 is a `hidden beast` number, since 90 + 42 + 15 + 490 + 29 = 666.

It is not a de Polignac number, because 90421549029 - 2⁷ = 90421548901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90421549429) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4964319 + ... + 4982499.

It is an arithmetic number, because the mean of its divisors is an integer number (3148395120).

Almost surely, 2^90421549029 is an apocalyptic number.

It is an amenable number.

90421549029 is a deficient number, since it is larger than the sum of its proper divisors (60701416731).

90421549029 is a wasteful number, since it uses less digits than its factorization.

90421549029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19170 (or 19167 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 90421549029 in words is "ninety billion, four hundred twenty-one million, five hundred forty-nine thousand, twenty-nine".