91951796 has 6 divisors (see below), whose sum is σ = 160915650. Its totient is φ = 45975896.

The previous prime is 91951781. The next prime is 91951823. The reversal of 91951796 is 69715919.

It can be written as a sum of positive squares in only one way, i.e., 66650896 + 25300900 = 8164^2 + 5030^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 91951796.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11493971 + ... + 11493978.

It is an arithmetic number, because the mean of its divisors is an integer number (26819275).

Almost surely, 2^91951796 is an apocalyptic number.

It is an amenable number.

91951796 is a deficient number, since it is larger than the sum of its proper divisors (68963854).

91951796 is a wasteful number, since it uses less digits than its factorization.

91951796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22987953 (or 22987951 counting only the distinct ones).

The product of its digits is 153090, while the sum is 47.

The square root of 91951796 is about 9589.1499101849. The cubic root of 91951796 is about 451.3568855391.

The spelling of 91951796 in words is "ninety-one million, nine hundred fifty-one thousand, seven hundred ninety-six".