2397989946 has 16 divisors (see below), whose sum is σ = 5231978208. Its totient is φ = 726663600.

The previous prime is 2397989917. The next prime is 2397989953. The reversal of 2397989946 is 6499897932.

It is a super-2 number, since 2×2397989946² = 11500711562234165832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66), and also a Moran number because the ratio is a prime number: 36333181 = 2397989946 / (2 + 3 + 9 + 7 + 9 + 8 + 9 + 9 + 4 + 6).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18166525 + ... + 18166656.

It is an arithmetic number, because the mean of its divisors is an integer number (326998638).

Almost surely, 2^2397989946 is an apocalyptic number.

2397989946 is an abundant number, since it is smaller than the sum of its proper divisors (2833988262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2397989946 is a wasteful number, since it uses less digits than its factorization.

2397989946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36333197.

The product of its digits is 52907904, while the sum is 66.

The square root of 2397989946 is about 48969.2755306835. The cubic root of 2397989946 is about 1338.4920189950.

The spelling of 2397989946 in words is "two billion, three hundred ninety-seven million, nine hundred eighty-nine thousand, nine hundred forty-six".