91407400004 has 12 divisors (see below), whose sum is σ = 160006104300. Its totient is φ = 45691370208.

The previous prime is 91407400001. The next prime is 91407400013. The reversal of 91407400004 is 40000470419.

It can be written as a sum of positive squares in 2 ways, for example, as 38805060100 + 52602339904 = 196990^2 + 229352^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 91407400004.

It is not an unprimeable number, because it can be changed into a prime (91407400001) 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, 3065759 + ... + 3095430.

It is an arithmetic number, because the mean of its divisors is an integer number (13333842025).

Almost surely, 2^91407400004 is an apocalyptic number.

It is an amenable number.

91407400004 is a deficient number, since it is larger than the sum of its proper divisors (68598704296).

91407400004 is a wasteful number, since it uses less digits than its factorization.

91407400004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6164902 (or 6164900 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The spelling of 91407400004 in words is "ninety-one billion, four hundred seven million, four hundred thousand, four".