90583961 has 4 divisors (see below), whose sum is σ = 97551972. Its totient is φ = 83615952.

The previous prime is 90583919. The next prime is 90583991. The reversal of 90583961 is 16938509.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16938509 = 7 ⋅2419787.

It can be written as a sum of positive squares in 2 ways, for example, as 39375625 + 51208336 = 6275^2 + 7156^2 .

It is a cyclic number.

It is not a de Polignac number, because 90583961 - 2⁶ = 90583897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90583901) 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, 3483986 + ... + 3484011.

It is an arithmetic number, because the mean of its divisors is an integer number (24387993).

Almost surely, 2^90583961 is an apocalyptic number.

It is an amenable number.

90583961 is a deficient number, since it is larger than the sum of its proper divisors (6968011).

90583961 is a wasteful number, since it uses less digits than its factorization.

90583961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6968010.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 90583961 is about 9517.5606643719. The cubic root of 90583961 is about 449.1076323929.

The spelling of 90583961 in words is "ninety million, five hundred eighty-three thousand, nine hundred sixty-one".