91970460 has 72 divisors (see below), whose sum is σ = 279770400. Its totient is φ = 24455808.

The previous prime is 91970447. The next prime is 91970467. The reversal of 91970460 is 6407919.

91970460 is a `hidden beast` number, since 9 + 197 + 0 + 460 = 666.

It is a super-3 number, since 3×91970460³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91970467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107394 + ... + 108246.

It is an arithmetic number, because the mean of its divisors is an integer number (3885700).

Almost surely, 2^91970460 is an apocalyptic number.

91970460 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

91970460 is an abundant number, since it is smaller than the sum of its proper divisors (187799940).

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

91970460 is a wasteful number, since it uses less digits than its factorization.

91970460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467 (or 1462 counting only the distinct ones).

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

The square root of 91970460 is about 9590.1230440490. The cubic root of 91970460 is about 451.3874216655.

The spelling of 91970460 in words is "ninety-one million, nine hundred seventy thousand, four hundred sixty".