91942494 has 64 divisors (see below), whose sum is σ = 226271232. Its totient is φ = 24307200.

The previous prime is 91942489. The next prime is 91942507. The reversal of 91942494 is 49424919.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42499 + ... + 44609.

It is an arithmetic number, because the mean of its divisors is an integer number (3535488).

Almost surely, 2^91942494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91942494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113135616).

91942494 is an abundant number, since it is smaller than the sum of its proper divisors (134328738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91942494 is a wasteful number, since it uses less digits than its factorization.

91942494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2201.

The product of its digits is 93312, while the sum is 42.

The square root of 91942494 is about 9588.6648705646. The cubic root of 91942494 is about 451.3416650159.

The spelling of 91942494 in words is "ninety-one million, nine hundred forty-two thousand, four hundred ninety-four".