90197877 has 48 divisors (see below), whose sum is σ = 154211904. Its totient is φ = 46754400.

The previous prime is 90197873. The next prime is 90197893. The reversal of 90197877 is 77879109.

It is not a de Polignac number, because 90197877 - 2² = 90197873 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90197873) 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, 195427 + ... + 195887.

It is an arithmetic number, because the mean of its divisors is an integer number (3212748).

Almost surely, 2^90197877 is an apocalyptic number.

It is an amenable number.

90197877 is a deficient number, since it is larger than the sum of its proper divisors (64014027).

90197877 is a wasteful number, since it uses less digits than its factorization.

90197877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 48.

The square root of 90197877 is about 9497.2562880023. The cubic root of 90197877 is about 448.4686664438.

The spelling of 90197877 in words is "ninety million, one hundred ninety-seven thousand, eight hundred seventy-seven".