90745983 has 12 divisors (see below), whose sum is σ = 138788208. Its totient is φ = 56938560.

The previous prime is 90745981. The next prime is 90745999. The reversal of 90745983 is 38954709.

It is not a de Polignac number, because 90745983 - 2¹ = 90745981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90745981) 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, 296403 + ... + 296708.

It is an arithmetic number, because the mean of its divisors is an integer number (11565684).

Almost surely, 2^90745983 is an apocalyptic number.

90745983 is a deficient number, since it is larger than the sum of its proper divisors (48042225).

90745983 is a wasteful number, since it uses less digits than its factorization.

90745983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593134 (or 593131 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 90745983 is about 9526.0686014746. The cubic root of 90745983 is about 449.3752367070.

The spelling of 90745983 in words is "ninety million, seven hundred forty-five thousand, nine hundred eighty-three".