1400155139 has 8 divisors (see below), whose sum is σ = 1484946720. Its totient is φ = 1315633536.

The previous prime is 1400155129. The next prime is 1400155151. The reversal of 1400155139 is 9315510041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1400155139 - 2⁴ = 1400155123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1400155129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56759 + ... + 77600.

It is an arithmetic number, because the mean of its divisors is an integer number (185618340).

Almost surely, 2^1400155139 is an apocalyptic number.

1400155139 is a deficient number, since it is larger than the sum of its proper divisors (84791581).

1400155139 is a wasteful number, since it uses less digits than its factorization.

1400155139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134989.

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 1400155139 is about 37418.6469424003. The cubic root of 1400155139 is about 1118.7302625275.

The spelling of 1400155139 in words is "one billion, four hundred million, one hundred fifty-five thousand, one hundred thirty-nine".