91379590 has 16 divisors (see below), whose sum is σ = 174159072. Its totient is φ = 34401664.

The previous prime is 91379543. The next prime is 91379591. The reversal of 91379590 is 9597319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91379591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268594 + ... + 268933.

It is an arithmetic number, because the mean of its divisors is an integer number (10884942).

Almost surely, 2^91379590 is an apocalyptic number.

91379590 is a deficient number, since it is larger than the sum of its proper divisors (82779482).

91379590 is a wasteful number, since it uses less digits than its factorization.

91379590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537551.

The product of its (nonzero) digits is 76545, while the sum is 43.

The square root of 91379590 is about 9559.2672313311. The cubic root of 91379590 is about 450.4186885128.

The spelling of 91379590 in words is "ninety-one million, three hundred seventy-nine thousand, five hundred ninety".