1401800039 has 2 divisors, whose sum is σ = 1401800040. Its totient is φ = 1401800038.

The previous prime is 1401800017. The next prime is 1401800087. The reversal of 1401800039 is 9300081041.

It is a weak prime.

It is an emirp because it is prime and its reverse (9300081041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1401800039 - 2¹² = 1401795943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1401799990 and 1401800017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401800089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700900019 + 700900020.

It is an arithmetic number, because the mean of its divisors is an integer number (700900020).

Almost surely, 2^1401800039 is an apocalyptic number.

1401800039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401800039 is an equidigital number, since it uses as much as digits as its factorization.

1401800039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1401800039 is about 37440.6201738166. The cubic root of 1401800039 is about 1119.1681852515.

The spelling of 1401800039 in words is "one billion, four hundred one million, eight hundred thousand, thirty-nine".