91046390 has 32 divisors (see below), whose sum is σ = 174817440. Its totient is φ = 34020864.

The previous prime is 91046387. The next prime is 91046393. The reversal of 91046390 is 9364019.

It is an interprime number because it is at equal distance from previous prime (91046387) and next prime (91046393).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91046393) 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, 21704 + ... + 25556.

It is an arithmetic number, because the mean of its divisors is an integer number (5463045).

Almost surely, 2^91046390 is an apocalyptic number.

91046390 is a deficient number, since it is larger than the sum of its proper divisors (83771050).

91046390 is a wasteful number, since it uses less digits than its factorization.

91046390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4016.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 91046390 is about 9541.8232010450. The cubic root of 91046390 is about 449.8705635960.

The spelling of 91046390 in words is "ninety-one million, forty-six thousand, three hundred ninety".