91404001 has 16 divisors (see below), whose sum is σ = 103711104. Its totient is φ = 79922304.

The previous prime is 91403993. The next prime is 91404007. The reversal of 91404001 is 10040419.

It is a cyclic number.

It is not a de Polignac number, because 91404001 - 2³ = 91403993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91404001.

It is not an unprimeable number, because it can be changed into a prime (91404007) 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, 30565 + ... + 33421.

It is an arithmetic number, because the mean of its divisors is an integer number (6481944).

Almost surely, 2^91404001 is an apocalyptic number.

It is an amenable number.

91404001 is a deficient number, since it is larger than the sum of its proper divisors (12307103).

91404001 is a wasteful number, since it uses less digits than its factorization.

91404001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3000.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 91404001 is about 9560.5439698795. The cubic root of 91404001 is about 450.4587929886.

The spelling of 91404001 in words is "ninety-one million, four hundred four thousand, one".