91400955 has 16 divisors (see below), whose sum is σ = 146361600. Its totient is φ = 48707168.

The previous prime is 91400951. The next prime is 91400957. The reversal of 91400955 is 55900419.

It is a cyclic number.

It is not a de Polignac number, because 91400955 - 2² = 91400951 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91400951) 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 15 ways as a sum of consecutive naturals, for example, 30034 + ... + 32936.

It is an arithmetic number, because the mean of its divisors is an integer number (9147600).

Almost surely, 2^91400955 is an apocalyptic number.

91400955 is a deficient number, since it is larger than the sum of its proper divisors (54960645).

91400955 is a wasteful number, since it uses less digits than its factorization.

91400955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5010.

The product of its (nonzero) digits is 8100, while the sum is 33.

The square root of 91400955 is about 9560.3846679932. The cubic root of 91400955 is about 450.4537891496.

The spelling of 91400955 in words is "ninety-one million, four hundred thousand, nine hundred fifty-five".