91861295 has 8 divisors (see below), whose sum is σ = 116035440. Its totient is φ = 69621120.

The previous prime is 91861267. The next prime is 91861307. The reversal of 91861295 is 59216819.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91861295 - 2⁸ = 91861039 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 483386 + ... + 483575.

It is an arithmetic number, because the mean of its divisors is an integer number (14504430).

Almost surely, 2^91861295 is an apocalyptic number.

91861295 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

91861295 is a deficient number, since it is larger than the sum of its proper divisors (24174145).

91861295 is a wasteful number, since it uses less digits than its factorization.

91861295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966985.

The product of its digits is 38880, while the sum is 41.

The square root of 91861295 is about 9584.4298213300. The cubic root of 91861295 is about 451.2087584411.

The spelling of 91861295 in words is "ninety-one million, eight hundred sixty-one thousand, two hundred ninety-five".