91394000 has 40 divisors (see below), whose sum is σ = 220995528. Its totient is φ = 36556800.

The previous prime is 91393987. The next prime is 91394003. The reversal of 91394000 is 49319.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7268416 + 84125584 = 2696^2 + 9172^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91394003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20849 + ... + 24848.

Almost surely, 2^91394000 is an apocalyptic number.

It is an amenable number.

91394000 is an abundant number, since it is smaller than the sum of its proper divisors (129601528).

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

91394000 is a wasteful number, since it uses less digits than its factorization.

91394000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45720 (or 45704 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 91394000 is about 9560.0209204792. The cubic root of 91394000 is about 450.4423633551.

The spelling of 91394000 in words is "ninety-one million, three hundred ninety-four thousand".