1400031889 has 27 divisors (see below), whose sum is σ = 1558703163. Its totient is φ = 1257211200.

The previous prime is 1400031877. The next prime is 1400031931. The reversal of 1400031889 is 9881300041.

It is a happy number.

The square root of 1400031889 is 37417.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1089990225 + 310041664 = 33015^2 + 17608^2 .

It is not a de Polignac number, because 1400031889 - 2⁹ = 1400031377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1400031089) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 19718724 + ... + 19718794.

Almost surely, 2^1400031889 is an apocalyptic number.

1400031889 is the 37417-th square number.

1400031889 is the 18709-th centered octagonal number.

It is an amenable number.

1400031889 is a deficient number, since it is larger than the sum of its proper divisors (158671274).

1400031889 is an frugal number, since it uses more digits than its factorization.

1400031889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The cubic root of 1400031889 is about 1118.6974357959.

The spelling of 1400031889 in words is "one billion, four hundred million, thirty-one thousand, eight hundred eighty-nine".