91402443 has 24 divisors (see below), whose sum is σ = 144668160. Its totient is φ = 55149360.

The previous prime is 91402439. The next prime is 91402471. The reversal of 91402443 is 34420419.

It is not a de Polignac number, because 91402443 - 2² = 91402439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91403443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21730 + ... + 25592.

It is an arithmetic number, because the mean of its divisors is an integer number (6027840).

Almost surely, 2^91402443 is an apocalyptic number.

91402443 is a deficient number, since it is larger than the sum of its proper divisors (53265717).

91402443 is a wasteful number, since it uses less digits than its factorization.

91402443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4119 (or 4116 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 91402443 is about 9560.4624888130. The cubic root of 91402443 is about 450.4562335865.

The spelling of 91402443 in words is "ninety-one million, four hundred two thousand, four hundred forty-three".