1401390589 has 2 divisors, whose sum is σ = 1401390590. Its totient is φ = 1401390588.

The previous prime is 1401390583. The next prime is 1401390671. The reversal of 1401390589 is 9850931041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1366780900 + 34609689 = 36970^2 + 5883^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401390589 - 2¹³ = 1401382397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401390583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700695294 + 700695295.

It is an arithmetic number, because the mean of its divisors is an integer number (700695295).

Almost surely, 2^1401390589 is an apocalyptic number.

It is an amenable number.

1401390589 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401390589 is an equidigital number, since it uses as much as digits as its factorization.

1401390589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 1401390589 is about 37435.1517827830. The cubic root of 1401390589 is about 1119.0592091675.

The spelling of 1401390589 in words is "one billion, four hundred one million, three hundred ninety thousand, five hundred eighty-nine".