91406994 has 32 divisors (see below), whose sum is σ = 221222016. Its totient is φ = 24579840.

The previous prime is 91406981. The next prime is 91407013. The reversal of 91406994 is 49960419.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63297 + ... + 64724.

It is an arithmetic number, because the mean of its divisors is an integer number (6913188).

Almost surely, 2^91406994 is an apocalyptic number.

91406994 is an abundant number, since it is smaller than the sum of its proper divisors (129815022).

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

91406994 is a wasteful number, since it uses less digits than its factorization.

91406994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128050.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 91406994 is about 9560.7004973485. The cubic root of 91406994 is about 450.4637096532.

It can be divided in two parts, 9 and 1406994, that added together give a triangular number (1407003 = T₁₆₇₇).

The spelling of 91406994 in words is "ninety-one million, four hundred six thousand, nine hundred ninety-four".