91769944 has 96 divisors (see below), whose sum is σ = 217183680. Its totient is φ = 36105216.

The previous prime is 91769939. The next prime is 91769959. The reversal of 91769944 is 44996719.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 313062 + ... + 313354.

It is an arithmetic number, because the mean of its divisors is an integer number (2262330).

Almost surely, 2^91769944 is an apocalyptic number.

91769944 is a gapful number since it is divisible by the number (94) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91769944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108591840).

91769944 is an abundant number, since it is smaller than the sum of its proper divisors (125413736).

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

91769944 is a wasteful number, since it uses less digits than its factorization.

91769944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 366 counting only the distinct ones).

The product of its digits is 489888, while the sum is 49.

The square root of 91769944 is about 9579.6630420908. The cubic root of 91769944 is about 451.0591414126.

The spelling of 91769944 in words is "ninety-one million, seven hundred sixty-nine thousand, nine hundred forty-four".