90937091 has 12 divisors (see below), whose sum is σ = 106117128. Its totient is φ = 77700672.

The previous prime is 90937087. The next prime is 90937117. The reversal of 90937091 is 19073909.

It is a happy number.

It is not a de Polignac number, because 90937091 - 2² = 90937087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90937001) 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, 13760 + ... + 19266.

It is an arithmetic number, because the mean of its divisors is an integer number (8843094).

Almost surely, 2^90937091 is an apocalyptic number.

90937091 is a deficient number, since it is larger than the sum of its proper divisors (15180037).

90937091 is a wasteful number, since it uses less digits than its factorization.

90937091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5858 (or 5851 counting only the distinct ones).

The product of its (nonzero) digits is 15309, while the sum is 38.

The square root of 90937091 is about 9536.0941165658. The cubic root of 90937091 is about 449.6904719166.

The spelling of 90937091 in words is "ninety million, nine hundred thirty-seven thousand, ninety-one".