90920983 has 4 divisors (see below), whose sum is σ = 92855520. Its totient is φ = 88986448.

The previous prime is 90920957. The next prime is 90920993. The reversal of 90920983 is 38902909.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38902909 = 3557 ⋅10937.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90920983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90920953) 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, 967198 + ... + 967291.

It is an arithmetic number, because the mean of its divisors is an integer number (23213880).

Almost surely, 2^90920983 is an apocalyptic number.

90920983 is a deficient number, since it is larger than the sum of its proper divisors (1934537).

90920983 is a wasteful number, since it uses less digits than its factorization.

90920983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934536.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 90920983 is about 9535.2494985711. The cubic root of 90920983 is about 449.6639186083.

The spelling of 90920983 in words is "ninety million, nine hundred twenty thousand, nine hundred eighty-three".