1400014139 has 4 divisors (see below), whose sum is σ = 1419732720. Its totient is φ = 1380295560.

The previous prime is 1400014129. The next prime is 1400014159. The reversal of 1400014139 is 9314100041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9314100041 = 1171 ⋅7953971.

It is a cyclic number.

It is not a de Polignac number, because 1400014139 - 2⁴ = 1400014123 is a prime.

It is a super-2 number, since 2×1400014139² = 3920079178799822642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1400014129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9859184 + ... + 9859325.

It is an arithmetic number, because the mean of its divisors is an integer number (354933180).

Almost surely, 2^1400014139 is an apocalyptic number.

1400014139 is a deficient number, since it is larger than the sum of its proper divisors (19718581).

1400014139 is an equidigital number, since it uses as much as digits as its factorization.

1400014139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19718580.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1400014139 is about 37416.7628075973. The cubic root of 1400014139 is about 1118.6927080551.

The spelling of 1400014139 in words is "one billion, four hundred million, fourteen thousand, one hundred thirty-nine".