1403042989 has 2 divisors, whose sum is σ = 1403042990. Its totient is φ = 1403042988.

The previous prime is 1403042959. The next prime is 1403043053. The reversal of 1403042989 is 9892403041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1398386025 + 4656964 = 37395^2 + 2158^2 .

It is an emirp because it is prime and its reverse (9892403041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1403042989 - 2²⁹ = 866172077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1403042909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701521494 + 701521495.

It is an arithmetic number, because the mean of its divisors is an integer number (701521495).

Almost surely, 2^1403042989 is an apocalyptic number.

It is an amenable number.

1403042989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1403042989 is an equidigital number, since it uses as much as digits as its factorization.

1403042989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 1403042989 is about 37457.2154464263. The cubic root of 1403042989 is about 1119.4988693991.

The spelling of 1403042989 in words is "one billion, four hundred three million, forty-two thousand, nine hundred eighty-nine".