91392408452 has 12 divisors (see below), whose sum is σ = 159946488156. Its totient is φ = 45693411840.

The previous prime is 91392408449. The next prime is 91392408461. The reversal of 91392408452 is 25480429319.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8059730176 + 83332678276 = 89776^2 + 288674^2 .

It is a junction number, because it is equal to n+sod(n) for n = 91392408397 and 91392408406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 623573 + ... + 756060.

It is an arithmetic number, because the mean of its divisors is an integer number (13328874013).

Almost surely, 2^91392408452 is an apocalyptic number.

It is an amenable number.

91392408452 is a deficient number, since it is larger than the sum of its proper divisors (68554079704).

91392408452 is a wasteful number, since it uses less digits than its factorization.

91392408452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396198 (or 1396196 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 91392408452 in words is "ninety-one billion, three hundred ninety-two million, four hundred eight thousand, four hundred fifty-two".