1400350139 has 2 divisors, whose sum is σ = 1400350140. Its totient is φ = 1400350138.

The previous prime is 1400350123. The next prime is 1400350177. The reversal of 1400350139 is 9310530041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1400350139 - 2⁴ = 1400350123 is a prime.

It is not a weakly prime, because it can be changed into another prime (1400350339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700175069 + 700175070.

It is an arithmetic number, because the mean of its divisors is an integer number (700175070).

Almost surely, 2^1400350139 is an apocalyptic number.

1400350139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400350139 is an equidigital number, since it uses as much as digits as its factorization.

1400350139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 1400350139 is about 37421.2525044259. The cubic root of 1400350139 is about 1118.7821954094.

The spelling of 1400350139 in words is "one billion, four hundred million, three hundred fifty thousand, one hundred thirty-nine".