9040388957 has 2 divisors, whose sum is σ = 9040388958. Its totient is φ = 9040388956.

The previous prime is 9040388953. The next prime is 9040388977. The reversal of 9040388957 is 7598830409.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7671832921 + 1368556036 = 87589^2 + 36994^2 .

It is a cyclic number.

It is not a de Polignac number, because 9040388957 - 2² = 9040388953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9040388899 and 9040388908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9040388953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4520194478 + 4520194479.

It is an arithmetic number, because the mean of its divisors is an integer number (4520194479).

Almost surely, 2^9040388957 is an apocalyptic number.

It is an amenable number.

9040388957 is a deficient number, since it is larger than the sum of its proper divisors (1).

9040388957 is an equidigital number, since it uses as much as digits as its factorization.

9040388957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The square root of 9040388957 is about 95080.9600130331. The cubic root of 9040388957 is about 2083.1907510284.

The spelling of 9040388957 in words is "nine billion, forty million, three hundred eighty-eight thousand, nine hundred fifty-seven".