1401343139 has 4 divisors (see below), whose sum is σ = 1601535024. Its totient is φ = 1201151256.

The previous prime is 1401343121. The next prime is 1401343147. The reversal of 1401343139 is 9313431041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9313431041 = 97 ⋅96014753.

It is a cyclic number.

It is not a de Polignac number, because 1401343139 - 2⁸ = 1401342883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1401343109) 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, 100095932 + ... + 100095945.

It is an arithmetic number, because the mean of its divisors is an integer number (400383756).

Almost surely, 2^1401343139 is an apocalyptic number.

1401343139 is a deficient number, since it is larger than the sum of its proper divisors (200191885).

1401343139 is an equidigital number, since it uses as much as digits as its factorization.

1401343139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200191884.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 1401343139 is about 37434.5180147948. The cubic root of 1401343139 is about 1119.0465788655.

The spelling of 1401343139 in words is "one billion, four hundred one million, three hundred forty-three thousand, one hundred thirty-nine".