400049252 has 24 divisors (see below), whose sum is σ = 705100032. Its totient is φ = 198598400.

The previous prime is 400049249. The next prime is 400049261. The reversal of 400049252 is 252940004.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 438677 + ... + 439587.

It is an arithmetic number, because the mean of its divisors is an integer number (29379168).

Almost surely, 2^400049252 is an apocalyptic number.

It is an amenable number.

400049252 is a deficient number, since it is larger than the sum of its proper divisors (305050780).

400049252 is a wasteful number, since it uses less digits than its factorization.

400049252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579 (or 1577 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 400049252 is about 20001.2312620998. The cubic root of 400049252 is about 736.8365394735.

Adding to 400049252 its reverse (252940004), we get a palindrome (652989256).

The spelling of 400049252 in words is "four hundred million, forty-nine thousand, two hundred fifty-two".