1400143239 has 80 divisors (see below), whose sum is σ = 2521601280. Its totient is φ = 763741440.

The previous prime is 1400143223. The next prime is 1400143249. The reversal of 1400143239 is 9323410041.

It is not a de Polignac number, because 1400143239 - 2⁴ = 1400143223 is a prime.

It is a super-2 number, since 2×1400143239² = 3920802179434822242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400143249) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 346372 + ... + 350390.

It is an arithmetic number, because the mean of its divisors is an integer number (31520016).

Almost surely, 2^1400143239 is an apocalyptic number.

1400143239 is a deficient number, since it is larger than the sum of its proper divisors (1121458041).

1400143239 is a wasteful number, since it uses less digits than its factorization.

1400143239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4082 (or 4073 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1400143239 is about 37418.4879304335. The cubic root of 1400143239 is about 1118.7270931340.

The spelling of 1400143239 in words is "one billion, four hundred million, one hundred forty-three thousand, two hundred thirty-nine".