2391992464 has 15 divisors (see below), whose sum is σ = 4634864467. Its totient is φ = 1195898416.

The previous prime is 2391992461. The next prime is 2391992483. The reversal of 2391992464 is 4642991932.

It is a happy number.

The square root of 2391992464 is 48908.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2391992461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 189519 + ... + 201745.

Almost surely, 2^2391992464 is an apocalyptic number.

2391992464 is the 48908-th square number.

It is an amenable number.

2391992464 is a deficient number, since it is larger than the sum of its proper divisors (2242872003).

2391992464 is an frugal number, since it uses more digits than its factorization.

2391992464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24462 (or 12229 counting only the distinct ones).

The product of its digits is 839808, while the sum is 49.

The cubic root of 2391992464 is about 1337.3752109272.

Multiplying 2391992464 by its sum of digits (49), we get a square (117207630736 = 342356²).

The spelling of 2391992464 in words is "two billion, three hundred ninety-one million, nine hundred ninety-two thousand, four hundred sixty-four".