91135004 has 12 divisors (see below), whose sum is σ = 159590424. Its totient is φ = 45537744.

The previous prime is 91134991. The next prime is 91135007. The reversal of 91135004 is 40053119.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91135007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359 + ... + 13505.

It is an arithmetic number, because the mean of its divisors is an integer number (13299202).

Almost surely, 2^91135004 is an apocalyptic number.

It is an amenable number.

91135004 is a deficient number, since it is larger than the sum of its proper divisors (68455420).

91135004 is a wasteful number, since it uses less digits than its factorization.

91135004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14884 (or 14882 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 91135004 is about 9546.4655239518. The cubic root of 91135004 is about 450.0164668871.

The spelling of 91135004 in words is "ninety-one million, one hundred thirty-five thousand, four".