1401401489 has 2 divisors, whose sum is σ = 1401401490. Its totient is φ = 1401401488.

The previous prime is 1401401459. The next prime is 1401401497. The reversal of 1401401489 is 9841041041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1346523025 + 54878464 = 36695^2 + 7408^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401401489 - 2²⁸ = 1132966033 is a prime.

It is a super-2 number, since 2×1401401489² = 3927852266742834242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1401401429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700700744 + 700700745.

It is an arithmetic number, because the mean of its divisors is an integer number (700700745).

Almost surely, 2^1401401489 is an apocalyptic number.

It is an amenable number.

1401401489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401401489 is an equidigital number, since it uses as much as digits as its factorization.

1401401489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 1401401489 is about 37435.2973675915. The cubic root of 1401401489 is about 1119.0621105032.

The spelling of 1401401489 in words is "one billion, four hundred one million, four hundred one thousand, four hundred eighty-nine".