90454237208 has 8 divisors (see below), whose sum is σ = 169601694780. Its totient is φ = 45227118600.

The previous prime is 90454237199. The next prime is 90454237309. The reversal of 90454237208 is 80273245409.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×90454237208² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5653389818 + ... + 5653389833.

Almost surely, 2^90454237208 is an apocalyptic number.

It is an amenable number.

90454237208 is a deficient number, since it is larger than the sum of its proper divisors (79147457572).

90454237208 is a wasteful number, since it uses less digits than its factorization.

90454237208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11306779657 (or 11306779653 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 90454237208 in words is "ninety billion, four hundred fifty-four million, two hundred thirty-seven thousand, two hundred eight".