90461804949 has 12 divisors (see below), whose sum is σ = 132809135212. Its totient is φ = 59319216000.

The previous prime is 90461804947. The next prime is 90461804957. The reversal of 90461804949 is 94940816409.

It is a happy number.

90461804949 is a `hidden beast` number, since 90 + 4 + 61 + 8 + 0 + 494 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10227276900 + 80234528049 = 101130^2 + 283257^2 .

It is not a de Polignac number, because 90461804949 - 2¹ = 90461804947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90461804895 and 90461804904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90461804941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82387252 + ... + 82388349.

Almost surely, 2^90461804949 is an apocalyptic number.

It is an amenable number.

90461804949 is a deficient number, since it is larger than the sum of its proper divisors (42347330263).

90461804949 is a wasteful number, since it uses less digits than its factorization.

90461804949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164775668 (or 164775665 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The spelling of 90461804949 in words is "ninety billion, four hundred sixty-one million, eight hundred four thousand, nine hundred forty-nine".