91374442 has 8 divisors (see below), whose sum is σ = 137244996. Its totient is φ = 45626112.

The previous prime is 91374433. The next prime is 91374457. The reversal of 91374442 is 24447319.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 87216921 + 4157521 = 9339^2 + 2039^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×91374442² = 16698577301622728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91374398 and 91374407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28663 + ... + 31690.

Almost surely, 2^91374442 is an apocalyptic number.

91374442 is a deficient number, since it is larger than the sum of its proper divisors (45870554).

91374442 is a wasteful number, since it uses less digits than its factorization.

91374442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61112.

The product of its digits is 24192, while the sum is 34.

The square root of 91374442 is about 9558.9979600374. The cubic root of 91374442 is about 450.4102300268.

The spelling of 91374442 in words is "ninety-one million, three hundred seventy-four thousand, four hundred forty-two".