91479745 has 8 divisors (see below), whose sum is σ = 125457984. Its totient is φ = 62728944.

The previous prime is 91479743. The next prime is 91479767. The reversal of 91479745 is 54797419.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91479745 - 2¹ = 91479743 is a prime.

It is a super-3 number, since 3×91479745³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91479695 and 91479704.

It is not an unprimeable number, because it can be changed into a prime (91479743) 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, 1306819 + ... + 1306888.

It is an arithmetic number, because the mean of its divisors is an integer number (15682248).

Almost surely, 2^91479745 is an apocalyptic number.

It is an amenable number.

91479745 is a deficient number, since it is larger than the sum of its proper divisors (33978239).

91479745 is a wasteful number, since it uses less digits than its factorization.

91479745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2613719.

The product of its digits is 317520, while the sum is 46.

The square root of 91479745 is about 9564.5044304449. The cubic root of 91479745 is about 450.5831862687.

The spelling of 91479745 in words is "ninety-one million, four hundred seventy-nine thousand, seven hundred forty-five".