2399870446 has 4 divisors (see below), whose sum is σ = 3599805672. Its totient is φ = 1199935222.

The previous prime is 2399870441. The next prime is 2399870477. The reversal of 2399870446 is 6440789932.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 2399870393 and 2399870402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2399870441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 599967610 + ... + 599967613.

It is an arithmetic number, because the mean of its divisors is an integer number (899951418).

Almost surely, 2^2399870446 is an apocalyptic number.

2399870446 is a deficient number, since it is larger than the sum of its proper divisors (1199935226).

2399870446 is a wasteful number, since it uses less digits than its factorization.

2399870446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199935225.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The square root of 2399870446 is about 48988.4725828434. The cubic root of 2399870446 is about 1338.8418086985.

The spelling of 2399870446 in words is "two billion, three hundred ninety-nine million, eight hundred seventy thousand, four hundred forty-six".