91046144 has 108 divisors (see below), whose sum is σ = 221438784. Its totient is φ = 36529152.

The previous prime is 91046107. The next prime is 91046149. The reversal of 91046144 is 44164019.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91046149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1937129 + ... + 1937175.

Almost surely, 2^91046144 is an apocalyptic number.

91046144 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 91046144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110719392).

91046144 is an abundant number, since it is smaller than the sum of its proper divisors (130392640).

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

91046144 is an equidigital number, since it uses as much as digits as its factorization.

91046144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 91046144 is about 9541.8103104180. The cubic root of 91046144 is about 449.8701584243.

The spelling of 91046144 in words is "ninety-one million, forty-six thousand, one hundred forty-four".