91471401 has 24 divisors (see below), whose sum is σ = 151567104. Its totient is φ = 52073280.

The previous prime is 91471399. The next prime is 91471463. The reversal of 91471401 is 10417419.

It is not a de Polignac number, because 91471401 - 2¹ = 91471399 is a prime.

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

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15120 + ... + 20286.

It is an arithmetic number, because the mean of its divisors is an integer number (6315296).

Almost surely, 2^91471401 is an apocalyptic number.

It is an amenable number.

91471401 is a deficient number, since it is larger than the sum of its proper divisors (60095703).

91471401 is a wasteful number, since it uses less digits than its factorization.

91471401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5461 (or 5458 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 91471401 is about 9564.0682243489. The cubic root of 91471401 is about 450.5694864039.

The spelling of 91471401 in words is "ninety-one million, four hundred seventy-one thousand, four hundred one".