91412437 has 4 divisors (see below), whose sum is σ = 94564620. Its totient is φ = 88260256.

The previous prime is 91412413. The next prime is 91412479. The reversal of 91412437 is 73421419.

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 23415921 + 67996516 = 4839^2 + 8246^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91412437 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91412399 and 91412408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91415437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1576048 + ... + 1576105.

It is an arithmetic number, because the mean of its divisors is an integer number (23641155).

Almost surely, 2^91412437 is an apocalyptic number.

It is an amenable number.

91412437 is a deficient number, since it is larger than the sum of its proper divisors (3152183).

91412437 is a wasteful number, since it uses less digits than its factorization.

91412437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3152182.

The product of its digits is 6048, while the sum is 31.

The square root of 91412437 is about 9560.9851479855. The cubic root of 91412437 is about 450.4726507098.

The spelling of 91412437 in words is "ninety-one million, four hundred twelve thousand, four hundred thirty-seven".