91395951 has 8 divisors (see below), whose sum is σ = 127159680. Its totient is φ = 58281432.

The previous prime is 91395853. The next prime is 91395971. The reversal of 91395951 is 15959319.

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

It is not a de Polignac number, because 91395951 - 2¹¹ = 91393903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91395971) 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 7 ways as a sum of consecutive naturals, for example, 662221 + ... + 662358.

It is an arithmetic number, because the mean of its divisors is an integer number (15894960).

Almost surely, 2^91395951 is an apocalyptic number.

91395951 is a deficient number, since it is larger than the sum of its proper divisors (35763729).

91395951 is a wasteful number, since it uses less digits than its factorization.

91395951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324605.

The product of its digits is 54675, while the sum is 42.

The square root of 91395951 is about 9560.1229594603. The cubic root of 91395951 is about 450.4455685502.

The spelling of 91395951 in words is "ninety-one million, three hundred ninety-five thousand, nine hundred fifty-one".