91992941 has 4 divisors (see below), whose sum is σ = 93501084. Its totient is φ = 90484800.

The previous prime is 91992919. The next prime is 91992947. The reversal of 91992941 is 14929919.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6522916 + 85470025 = 2554^2 + 9245^2 .

It is a cyclic number.

It is not a de Polignac number, because 91992941 - 2¹⁰ = 91991917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91992892 and 91992901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91992947) 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, 753980 + ... + 754101.

It is an arithmetic number, because the mean of its divisors is an integer number (23375271).

Almost surely, 2^91992941 is an apocalyptic number.

It is an amenable number.

91992941 is a deficient number, since it is larger than the sum of its proper divisors (1508143).

91992941 is a wasteful number, since it uses less digits than its factorization.

91992941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508142.

The product of its digits is 52488, while the sum is 44.

The square root of 91992941 is about 9591.2950637544. The cubic root of 91992941 is about 451.4241972923.

The spelling of 91992941 in words is "ninety-one million, nine hundred ninety-two thousand, nine hundred forty-one".