1401606439 has 2 divisors, whose sum is σ = 1401606440. Its totient is φ = 1401606438.

The previous prime is 1401606431. The next prime is 1401606449. The reversal of 1401606439 is 9346061041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1401606439 - 2³ = 1401606431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401606431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700803219 + 700803220.

It is an arithmetic number, because the mean of its divisors is an integer number (700803220).

Almost surely, 2^1401606439 is an apocalyptic number.

1401606439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401606439 is an equidigital number, since it uses as much as digits as its factorization.

1401606439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 1401606439 is about 37438.0346572840. The cubic root of 1401606439 is about 1119.1166607996.

The spelling of 1401606439 in words is "one billion, four hundred one million, six hundred six thousand, four hundred thirty-nine".