1401290393 has 2 divisors, whose sum is σ = 1401290394. Its totient is φ = 1401290392.

The previous prime is 1401290377. The next prime is 1401290459. The reversal of 1401290393 is 3930921041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 849839104 + 551451289 = 29152^2 + 23483^2 .

It is an emirp because it is prime and its reverse (3930921041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1401290393 - 2⁴ = 1401290377 is a prime.

It is a super-2 number, since 2×1401290393² = 3927229531028188898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1401290993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700645196 + 700645197.

It is an arithmetic number, because the mean of its divisors is an integer number (700645197).

Almost surely, 2^1401290393 is an apocalyptic number.

It is an amenable number.

1401290393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401290393 is an equidigital number, since it uses as much as digits as its factorization.

1401290393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 1401290393 is about 37433.8134979593. The cubic root of 1401290393 is about 1119.0325385329.

The spelling of 1401290393 in words is "one billion, four hundred one million, two hundred ninety thousand, three hundred ninety-three".