91407889322 has 16 divisors (see below), whose sum is σ = 145224099720. Its totient is φ = 43001591808.

The previous prime is 91407889319. The next prime is 91407889333. The reversal of 91407889322 is 22398870419.

It can be written as a sum of positive squares in 4 ways, for example, as 69654294241 + 21753595081 = 263921^2 + 147491^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326663 + ... + 538074.

Almost surely, 2^91407889322 is an apocalyptic number.

91407889322 is a deficient number, since it is larger than the sum of its proper divisors (53816210398).

91407889322 is a wasteful number, since it uses less digits than its factorization.

91407889322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867865.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 91407889322 in words is "ninety-one billion, four hundred seven million, eight hundred eighty-nine thousand, three hundred twenty-two".