2399571972 has 48 divisors (see below), whose sum is σ = 7109845120. Its totient is φ = 685591776.

The previous prime is 2399571943. The next prime is 2399571973. The reversal of 2399571972 is 2791759932.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (2399571973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1586263 + ... + 1587774.

Almost surely, 2^2399571972 is an apocalyptic number.

It is an amenable number.

2399571972 is an abundant number, since it is smaller than the sum of its proper divisors (4710273148).

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

2399571972 is a wasteful number, since it uses less digits than its factorization.

2399571972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3174057 (or 3174049 counting only the distinct ones).

The product of its digits is 2143260, while the sum is 54.

The square root of 2399571972 is about 48985.4261183875. The cubic root of 2399571972 is about 1338.7863020859.

The spelling of 2399571972 in words is "two billion, three hundred ninety-nine million, five hundred seventy-one thousand, nine hundred seventy-two".