1401839039 has 2 divisors, whose sum is σ = 1401839040. Its totient is φ = 1401839038.

The previous prime is 1401839009. The next prime is 1401839051. The reversal of 1401839039 is 9309381041.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1401839039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1401838993 and 1401839011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401839009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700919519 + 700919520.

It is an arithmetic number, because the mean of its divisors is an integer number (700919520).

Almost surely, 2^1401839039 is an apocalyptic number.

1401839039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401839039 is an equidigital number, since it uses as much as digits as its factorization.

1401839039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 1401839039 is about 37441.1409949002. The cubic root of 1401839039 is about 1119.1785640867.

The spelling of 1401839039 in words is "one billion, four hundred one million, eight hundred thirty-nine thousand, thirty-nine".