1400044401 has 48 divisors (see below), whose sum is σ = 2459808000. Its totient is φ = 749067264.

The previous prime is 1400044391. The next prime is 1400044403. The reversal of 1400044401 is 1044400041.

It is not a de Polignac number, because 1400044401 - 2⁷ = 1400044273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1400044403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 209845 + ... + 216413.

It is an arithmetic number, because the mean of its divisors is an integer number (51246000).

Almost surely, 2^1400044401 is an apocalyptic number.

It is an amenable number.

1400044401 is a deficient number, since it is larger than the sum of its proper divisors (1059763599).

1400044401 is a wasteful number, since it uses less digits than its factorization.

1400044401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6798 (or 6795 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1400044401 is about 37417.1671963552. The cubic root of 1400044401 is about 1118.7007683630.

Adding to 1400044401 its reverse (1044400041), we get a palindrome (2444444442).

The spelling of 1400044401 in words is "one billion, four hundred million, forty-four thousand, four hundred one".