922770991 has 4 divisors (see below), whose sum is σ = 932284192. Its totient is φ = 913257792.

The previous prime is 922770983. The next prime is 922770997. The reversal of 922770991 is 199077229.

922770991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 922770991 - 2³ = 922770983 is a prime.

It is a super-2 number, since 2×922770991² = 1703012603662244162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (922770997) 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, 4756455 + ... + 4756648.

It is an arithmetic number, because the mean of its divisors is an integer number (233071048).

Almost surely, 2^922770991 is an apocalyptic number.

922770991 is a deficient number, since it is larger than the sum of its proper divisors (9513201).

922770991 is an equidigital number, since it uses as much as digits as its factorization.

922770991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9513200.

The product of its (nonzero) digits is 142884, while the sum is 46.

The square root of 922770991 is about 30377.1458665886. The cubic root of 922770991 is about 973.5643094201.

The spelling of 922770991 in words is "nine hundred twenty-two million, seven hundred seventy thousand, nine hundred ninety-one".