1332401989 has 2 divisors, whose sum is σ = 1332401990. Its totient is φ = 1332401988.

The previous prime is 1332401957. The next prime is 1332402011. The reversal of 1332401989 is 9891042331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1209857089 + 122544900 = 34783^2 + 11070^2 .

It is a cyclic number.

It is not a de Polignac number, because 1332401989 - 2⁵ = 1332401957 is a prime.

It is a super-2 number, since 2×1332401989² = 3550590120582312242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1332401929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666200994 + 666200995.

It is an arithmetic number, because the mean of its divisors is an integer number (666200995).

Almost surely, 2^1332401989 is an apocalyptic number.

It is an amenable number.

1332401989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1332401989 is an equidigital number, since it uses as much as digits as its factorization.

1332401989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 1332401989 is about 36502.0819817172. The cubic root of 1332401989 is about 1100.3860873369.

The spelling of 1332401989 in words is "one billion, three hundred thirty-two million, four hundred one thousand, nine hundred eighty-nine".