90691948 has 12 divisors (see below), whose sum is σ = 159411672. Its totient is φ = 45145760.

The previous prime is 90691943. The next prime is 90691949. The reversal of 90691948 is 84919609.

It is a junction number, because it is equal to n+sod(n) for n = 90691898 and 90691907.

It is not an unprimeable number, because it can be changed into a prime (90691943) 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, 49033 + ... + 50848.

It is an arithmetic number, because the mean of its divisors is an integer number (13284306).

Almost surely, 2^90691948 is an apocalyptic number.

It is an amenable number.

90691948 is a deficient number, since it is larger than the sum of its proper divisors (68719724).

90691948 is a wasteful number, since it uses less digits than its factorization.

90691948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100112 (or 100110 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 90691948 is about 9523.2320143951. The cubic root of 90691948 is about 449.2860250001.

The spelling of 90691948 in words is "ninety million, six hundred ninety-one thousand, nine hundred forty-eight".