91409755 has 8 divisors (see below), whose sum is σ = 109763424. Its totient is φ = 73080000.

The previous prime is 91409753. The next prime is 91409767. The reversal of 91409755 is 55790419.

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

It is not a de Polignac number, because 91409755 - 2¹ = 91409753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91409753) 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, 3930 + ... + 14080.

It is an arithmetic number, because the mean of its divisors is an integer number (13720428).

Almost surely, 2^91409755 is an apocalyptic number.

91409755 is a deficient number, since it is larger than the sum of its proper divisors (18353669).

91409755 is a wasteful number, since it uses less digits than its factorization.

91409755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11957.

The product of its (nonzero) digits is 56700, while the sum is 40.

The square root of 91409755 is about 9560.8448894436. The cubic root of 91409755 is about 450.4682451113.

The spelling of 91409755 in words is "ninety-one million, four hundred nine thousand, seven hundred fifty-five".