91970046 has 64 divisors (see below), whose sum is σ = 234524160. Its totient is φ = 26170560.

The previous prime is 91970033. The next prime is 91970147. The reversal of 91970046 is 64007919.

It is a super-3 number, since 3×91970046³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 176266 + ... + 176786.

It is an arithmetic number, because the mean of its divisors is an integer number (3664440).

Almost surely, 2^91970046 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91970046, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117262080).

91970046 is an abundant number, since it is smaller than the sum of its proper divisors (142554114).

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

91970046 is a wasteful number, since it uses less digits than its factorization.

91970046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006 (or 1000 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 91970046 is about 9590.1014593173. The cubic root of 91970046 is about 451.3867443659.

The spelling of 91970046 in words is "ninety-one million, nine hundred seventy thousand, forty-six".