91400953 has 16 divisors (see below), whose sum is σ = 109296000. Its totient is φ = 74777472.

The previous prime is 91400951. The next prime is 91400957. The reversal of 91400953 is 35900419.

It is not a de Polignac number, because 91400953 - 2¹ = 91400951 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91400951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15538 + ... + 20596.

It is an arithmetic number, because the mean of its divisors is an integer number (6831000).

Almost surely, 2^91400953 is an apocalyptic number.

It is an amenable number.

91400953 is a deficient number, since it is larger than the sum of its proper divisors (17895047).

91400953 is a wasteful number, since it uses less digits than its factorization.

91400953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5184.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 91400953 is about 9560.3845633949. The cubic root of 91400953 is about 450.4537858640.

The spelling of 91400953 in words is "ninety-one million, four hundred thousand, nine hundred fifty-three".