1401213239 has 2 divisors, whose sum is σ = 1401213240. Its totient is φ = 1401213238.

The previous prime is 1401213193. The next prime is 1401213293. The reversal of 1401213239 is 9323121041.

Together with next prime (1401213293) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1401213239 - 2⁸ = 1401212983 is a prime.

It is a super-2 number, since 2×1401213239² = 3926797082297742242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401213439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700606619 + 700606620.

It is an arithmetic number, because the mean of its divisors is an integer number (700606620).

Almost surely, 2^1401213239 is an apocalyptic number.

1401213239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401213239 is an equidigital number, since it uses as much as digits as its factorization.

1401213239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1401213239 is about 37432.7829449000. The cubic root of 1401213239 is about 1119.0120004580.

The spelling of 1401213239 in words is "one billion, four hundred one million, two hundred thirteen thousand, two hundred thirty-nine".