91092377 has 4 divisors (see below), whose sum is σ = 91111860. Its totient is φ = 91072896.

The previous prime is 91092371. The next prime is 91092383. The reversal of 91092377 is 77329019.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (91092371) and next prime (91092383).

It can be written as a sum of positive squares in 2 ways, for example, as 89661961 + 1430416 = 9469^2 + 1196^2 .

It is a cyclic number.

It is not a de Polignac number, because 91092377 - 2¹² = 91088281 is a prime.

It is a super-2 number, since 2×91092377² = 16595642295020258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91092377.

It is not an unprimeable number, because it can be changed into a prime (91092371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1949 + ... + 13637.

It is an arithmetic number, because the mean of its divisors is an integer number (22777965).

Almost surely, 2^91092377 is an apocalyptic number.

91092377 is the 7793-rd pentagonal number.

It is an amenable number.

91092377 is a deficient number, since it is larger than the sum of its proper divisors (19483).

91092377 is a wasteful number, since it uses less digits than its factorization.

91092377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19482.

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 91092377 is about 9544.2326564266. The cubic root of 91092377 is about 449.9462931789.

The spelling of 91092377 in words is "ninety-one million, ninety-two thousand, three hundred seventy-seven".