90405012092 has 12 divisors (see below), whose sum is σ = 159744779376. Its totient is φ = 44763646560.

The previous prime is 90405012091. The next prime is 90405012121. The reversal of 90405012092 is 29021050409.

It is a super-2 number, since 2×90405012092² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90405012091) 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, 109714409 + ... + 109715232.

It is an arithmetic number, because the mean of its divisors is an integer number (13312064948).

Almost surely, 2^90405012092 is an apocalyptic number.

It is an amenable number.

90405012092 is a deficient number, since it is larger than the sum of its proper divisors (69339767284).

90405012092 is a wasteful number, since it uses less digits than its factorization.

90405012092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219429748 (or 219429746 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The spelling of 90405012092 in words is "ninety billion, four hundred five million, twelve thousand, ninety-two".