91309377 has 8 divisors (see below), whose sum is σ = 125036416. Its totient is φ = 59227632.

The previous prime is 91309373. The next prime is 91309417. The reversal of 91309377 is 77390319.

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

It is not a de Polignac number, because 91309377 - 2² = 91309373 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91309373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 411193 + ... + 411414.

It is an arithmetic number, because the mean of its divisors is an integer number (15629552).

Almost surely, 2^91309377 is an apocalyptic number.

It is an amenable number.

91309377 is a deficient number, since it is larger than the sum of its proper divisors (33727039).

91309377 is a wasteful number, since it uses less digits than its factorization.

91309377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822647.

The product of its (nonzero) digits is 35721, while the sum is 39.

The square root of 91309377 is about 9555.5940160725. The cubic root of 91309377 is about 450.3032967688.

The spelling of 91309377 in words is "ninety-one million, three hundred nine thousand, three hundred seventy-seven".