9007472731 has 2 divisors, whose sum is σ = 9007472732. Its totient is φ = 9007472730.

The previous prime is 9007472689. The next prime is 9007472759. The reversal of 9007472731 is 1372747009.

It is a strong prime.

It is an emirp because it is prime and its reverse (1372747009) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9007472731 - 2²³ = 8999084123 is a prime.

It is a super-2 number, since 2×9007472731² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9007472791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4503736365 + 4503736366.

It is an arithmetic number, because the mean of its divisors is an integer number (4503736366).

Almost surely, 2^9007472731 is an apocalyptic number.

9007472731 is a deficient number, since it is larger than the sum of its proper divisors (1).

9007472731 is an equidigital number, since it uses as much as digits as its factorization.

9007472731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 74088, while the sum is 40.

The square root of 9007472731 is about 94907.7063836230. The cubic root of 9007472731 is about 2080.6593640444.

The spelling of 9007472731 in words is "nine billion, seven million, four hundred seventy-two thousand, seven hundred thirty-one".