1400275139 has 4 divisors (see below), whose sum is σ = 1400456256. Its totient is φ = 1400094024.

The previous prime is 1400275111. The next prime is 1400275147. The reversal of 1400275139 is 9315720041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9315720041 = 439 ⋅21220319.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1400275139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1400275189) 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, 78419 + ... + 94604.

It is an arithmetic number, because the mean of its divisors is an integer number (350114064).

Almost surely, 2^1400275139 is an apocalyptic number.

1400275139 is a deficient number, since it is larger than the sum of its proper divisors (181117).

1400275139 is an equidigital number, since it uses as much as digits as its factorization.

1400275139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181116.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 1400275139 is about 37420.2503866556. The cubic root of 1400275139 is about 1118.7622217946.

The spelling of 1400275139 in words is "one billion, four hundred million, two hundred seventy-five thousand, one hundred thirty-nine".