91404044 has 6 divisors (see below), whose sum is σ = 159957084. Its totient is φ = 45702020.

The previous prime is 91404029. The next prime is 91404067. The reversal of 91404044 is 44040419.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11425502 + ... + 11425509.

It is an arithmetic number, because the mean of its divisors is an integer number (26659514).

Almost surely, 2^91404044 is an apocalyptic number.

It is an amenable number.

91404044 is a deficient number, since it is larger than the sum of its proper divisors (68553040).

91404044 is a wasteful number, since it uses less digits than its factorization.

91404044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22851015 (or 22851013 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 91404044 is about 9560.5462187053. The cubic root of 91404044 is about 450.4588636264.

The spelling of 91404044 in words is "ninety-one million, four hundred four thousand, forty-four".