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400044004 = 22775712893
BaseRepresentation
bin10111110110000…
…010111111100100
31000212202100012121
4113312002333210
51304402402004
6103410155324
712625214023
oct2766027744
91025670177
10400044004
111958a5a88
12b1b82b44
1364b58639
143b1b68ba
15251c1854
hex17d82fe4

400044004 has 12 divisors (see below), whose sum is σ = 700221564. Its totient is φ = 199980704.

The previous prime is 400043999. The next prime is 400044019. The reversal of 400044004 is 400440004.

It can be written as a sum of positive squares in 2 ways, for example, as 287641600 + 112402404 = 16960^2 + 10602^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24582 + ... + 37474.

It is an arithmetic number, because the mean of its divisors is an integer number (58351797).

Almost surely, 2400044004 is an apocalyptic number.

It is an amenable number.

400044004 is a deficient number, since it is larger than the sum of its proper divisors (300177560).

400044004 is a wasteful number, since it uses less digits than its factorization.

400044004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20654 (or 20652 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 400044004 is about 20001.1000697462. The cubic root of 400044004 is about 736.8333174244.

Adding to 400044004 its reverse (400440004), we get a palindrome (800484008).

The spelling of 400044004 in words is "four hundred million, forty-four thousand, four".

Divisors: 1 2 4 7757 12893 15514 25786 31028 51572 100011001 200022002 400044004