9131390077 has 4 divisors (see below), whose sum is σ = 9131842720. Its totient is φ = 9130937436.

The previous prime is 9131390027. The next prime is 9131390083. The reversal of 9131390077 is 7700931319.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7700931319 = 8221 ⋅936739.

It is a cyclic number.

It is not a de Polignac number, because 9131390077 - 2¹⁵ = 9131357309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9131390027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194577 + ... + 236902.

It is an arithmetic number, because the mean of its divisors is an integer number (2282960680).

Almost surely, 2^9131390077 is an apocalyptic number.

It is an amenable number.

9131390077 is a deficient number, since it is larger than the sum of its proper divisors (452643).

9131390077 is a wasteful number, since it uses less digits than its factorization.

9131390077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452642.

The product of its (nonzero) digits is 35721, while the sum is 40.

The square root of 9131390077 is about 95558.3072108333. The cubic root of 9131390077 is about 2090.1572706603.

The spelling of 9131390077 in words is "nine billion, one hundred thirty-one million, three hundred ninety thousand, seventy-seven".