1400063889 has 16 divisors (see below), whose sum is σ = 2226189312. Its totient is φ = 765252048.

The previous prime is 1400063869. The next prime is 1400063893. The reversal of 1400063889 is 9883600041.

It is not a de Polignac number, because 1400063889 - 2⁵ = 1400063857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1400063809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1448859 + ... + 1449824.

It is an arithmetic number, because the mean of its divisors is an integer number (139136832).

Almost surely, 2^1400063889 is an apocalyptic number.

It is an amenable number.

1400063889 is a deficient number, since it is larger than the sum of its proper divisors (826125423).

1400063889 is a wasteful number, since it uses less digits than its factorization.

1400063889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2898716.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 1400063889 is about 37417.4276106736. The cubic root of 1400063889 is about 1118.7059589458.

The spelling of 1400063889 in words is "one billion, four hundred million, sixty-three thousand, eight hundred eighty-nine".