91996472 has 8 divisors (see below), whose sum is σ = 172493400. Its totient is φ = 45998232.

The previous prime is 91996451. The next prime is 91996493. The reversal of 91996472 is 27469919.

It is an interprime number because it is at equal distance from previous prime (91996451) and next prime (91996493).

It is a tau number, because it is divible by the number of its divisors (8).

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, 5749772 + ... + 5749787.

It is an arithmetic number, because the mean of its divisors is an integer number (21561675).

Almost surely, 2^91996472 is an apocalyptic number.

It is an amenable number.

91996472 is a deficient number, since it is larger than the sum of its proper divisors (80496928).

91996472 is a wasteful number, since it uses less digits than its factorization.

91996472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11499565 (or 11499561 counting only the distinct ones).

The product of its digits is 244944, while the sum is 47.

The square root of 91996472 is about 9591.4791351491. The cubic root of 91996472 is about 451.4299729472.

The spelling of 91996472 in words is "ninety-one million, nine hundred ninety-six thousand, four hundred seventy-two".