91401894 has 96 divisors (see below), whose sum is σ = 224640000. Its totient is φ = 26687232.

The previous prime is 91401889. The next prime is 91401899. The reversal of 91401894 is 49810419.

It is an interprime number because it is at equal distance from previous prime (91401889) and next prime (91401899).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91401899) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 459207 + ... + 459405.

It is an arithmetic number, because the mean of its divisors is an integer number (2340000).

Almost surely, 2^91401894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91401894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112320000).

91401894 is an abundant number, since it is smaller than the sum of its proper divisors (133238106).

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

91401894 is a wasteful number, since it uses less digits than its factorization.

91401894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 91401894 is about 9560.4337767698. The cubic root of 91401894 is about 450.4553317106.

The spelling of 91401894 in words is "ninety-one million, four hundred one thousand, eight hundred ninety-four".