2391077047 has 6 divisors (see below), whose sum is σ = 2540002568. Its totient is φ = 2250425184.

The previous prime is 2391077023. The next prime is 2391077069. The reversal of 2391077047 is 7407701932.

2391077047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-2391077047 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 (2391977047) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4136523 + ... + 4137100.

Almost surely, 2^2391077047 is an apocalyptic number.

2391077047 is a deficient number, since it is larger than the sum of its proper divisors (148925521).

2391077047 is an equidigital number, since it uses as much as digits as its factorization.

2391077047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8273657 (or 8273640 counting only the distinct ones).

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

The square root of 2391077047 is about 48898.6405434752. The cubic root of 2391077047 is about 1337.2045843847.

Adding to 2391077047 its reverse (7407701932), we get a palindrome (9798778979).

The spelling of 2391077047 in words is "two billion, three hundred ninety-one million, seventy-seven thousand, forty-seven".