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400000004444 = 22100000001111
BaseRepresentation
bin1011101001000011101…
…10111011000101011100
31102020110200120121002102
411310201312323011130
523023200000120234
6503431340144232
740620241636655
oct5644166730534
91366420517072
10400000004444
11144703635777
1265633238078
132b948640381
14155081a452c
15a6118e9c7e
hex5d21dbb15c

400000004444 has 6 divisors (see below), whose sum is σ = 700000007784. Its totient is φ = 200000002220.

The previous prime is 400000004413. The next prime is 400000004449. The reversal of 400000004444 is 444400000004.

400000004444 is a modest number, since divided by 4444 gives 4000 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400000004449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50000000552 + ... + 50000000559.

It is an arithmetic number, because the mean of its divisors is an integer number (116666667964).

Almost surely, 2400000004444 is an apocalyptic number.

It is an amenable number.

400000004444 is a deficient number, since it is larger than the sum of its proper divisors (300000003340).

400000004444 is a wasteful number, since it uses less digits than its factorization.

400000004444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100000001115 (or 100000001113 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 400000004444 its reverse (444400000004), we get a palindrome (844400004448).

The spelling of 400000004444 in words is "four hundred billion, four thousand, four hundred forty-four".

Divisors: 1 2 4 100000001111 200000002222 400000004444