9077230891 has 2 divisors, whose sum is σ = 9077230892. Its totient is φ = 9077230890.

The previous prime is 9077230861. The next prime is 9077230969. The reversal of 9077230891 is 1980327709.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9077230891 - 2⁷ = 9077230763 is a prime.

It is a super-2 number, since 2×9077230891² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9077230861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4538615445 + 4538615446.

It is an arithmetic number, because the mean of its divisors is an integer number (4538615446).

Almost surely, 2^9077230891 is an apocalyptic number.

9077230891 is a deficient number, since it is larger than the sum of its proper divisors (1).

9077230891 is an equidigital number, since it uses as much as digits as its factorization.

9077230891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 9077230891 is about 95274.5028378527. The cubic root of 9077230891 is about 2086.0167634510.

The spelling of 9077230891 in words is "nine billion, seventy-seven million, two hundred thirty thousand, eight hundred ninety-one".