91369404 has 96 divisors (see below), whose sum is σ = 285017600. Its totient is φ = 24727680.

The previous prime is 91369393. The next prime is 91369417. The reversal of 91369404 is 40496319.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11184 + ... + 17544.

Almost surely, 2^91369404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91369404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142508800).

91369404 is an abundant number, since it is smaller than the sum of its proper divisors (193648196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91369404 is a wasteful number, since it uses less digits than its factorization.

91369404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6400 (or 6392 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 91369404 is about 9558.7344350599. The cubic root of 91369404 is about 450.4019519700.

The spelling of 91369404 in words is "ninety-one million, three hundred sixty-nine thousand, four hundred four".