1400012889 has 16 divisors (see below), whose sum is σ = 2037008064. Its totient is φ = 848232000.

The previous prime is 1400012869. The next prime is 1400012989. The reversal of 1400012889 is 9882100041.

It is not a de Polignac number, because 1400012889 - 2⁵ = 1400012857 is a prime.

It is a super-2 number, since 2×1400012889² = 3920072178732252642, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1400012819) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 204567 + ... + 211299.

It is an arithmetic number, because the mean of its divisors is an integer number (127313004).

Almost surely, 2^1400012889 is an apocalyptic number.

It is an amenable number.

1400012889 is a deficient number, since it is larger than the sum of its proper divisors (636995175).

1400012889 is a wasteful number, since it uses less digits than its factorization.

1400012889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13048.

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 1400012889 is about 37416.7461038503. The cubic root of 1400012889 is about 1118.6923751141.

The spelling of 1400012889 in words is "one billion, four hundred million, twelve thousand, eight hundred eighty-nine".