1400039 has 2 divisors, whose sum is σ = 1400040. Its totient is φ = 1400038.

The previous prime is 1400029. The next prime is 1400051. The reversal of 1400039 is 9300041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1400039 - 2⁴ = 1400023 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1400029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700019 + 700020.

It is an arithmetic number, because the mean of its divisors is an integer number (700020).

2^1400039 is an apocalyptic number.

1400039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400039 is an equidigital number, since it uses as much as digits as its factorization.

1400039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1400039 is about 1183.2324370131. The cubic root of 1400039 is about 111.8699329811.

Subtracting from 1400039 its product of nonzero digits (108), we obtain a palindrome (1399931).

The spelling of 1400039 in words is "one million, four hundred thousand, thirty-nine".