1400939 has 2 divisors, whose sum is σ = 1400940. Its totient is φ = 1400938.

The previous prime is 1400923. The next prime is 1400941. The reversal of 1400939 is 9390041.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (9390041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1400939 - 2⁴ = 1400923 is a prime.

Together with 1400941, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1400989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700469 + 700470.

It is an arithmetic number, because the mean of its divisors is an integer number (700470).

2^1400939 is an apocalyptic number.

1400939 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400939 is an equidigital number, since it uses as much as digits as its factorization.

1400939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 1400939 is about 1183.6126900300. The cubic root of 1400939 is about 111.8938993070.

The spelling of 1400939 in words is "one million, four hundred thousand, nine hundred thirty-nine".