1401039397 has 2 divisors, whose sum is σ = 1401039398. Its totient is φ = 1401039396.

The previous prime is 1401039361. The next prime is 1401039407. The reversal of 1401039397 is 7939301041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 988096356 + 412943041 = 31434^2 + 20321^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1401039397 is a prime.

It is a super-2 number, since 2×1401039397² = 3925822783892247218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401039307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700519698 + 700519699.

It is an arithmetic number, because the mean of its divisors is an integer number (700519699).

Almost surely, 2^1401039397 is an apocalyptic number.

It is an amenable number.

1401039397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401039397 is an equidigital number, since it uses as much as digits as its factorization.

1401039397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 1401039397 is about 37430.4608173610. The cubic root of 1401039397 is about 1118.9657216752.

The spelling of 1401039397 in words is "one billion, four hundred one million, thirty-nine thousand, three hundred ninety-seven".