91471902 has 16 divisors (see below), whose sum is σ = 187406352. Its totient is φ = 29746880.

The previous prime is 91471901. The next prime is 91471907. The reversal of 91471902 is 20917419.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91471901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185673 + ... + 186164.

It is an arithmetic number, because the mean of its divisors is an integer number (11712897).

Almost surely, 2^91471902 is an apocalyptic number.

91471902 is an abundant number, since it is smaller than the sum of its proper divisors (95934450).

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

91471902 is a wasteful number, since it uses less digits than its factorization.

91471902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371883.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 91471902 is about 9564.0944160961. The cubic root of 91471902 is about 450.5703090104.

The spelling of 91471902 in words is "ninety-one million, four hundred seventy-one thousand, nine hundred two".