474039989 has 2 divisors, whose sum is σ = 474039990. Its totient is φ = 474039988.

The previous prime is 474039977. The next prime is 474040031. The reversal of 474039989 is 989930474.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 352312900 + 121727089 = 18770^2 + 11033^2 .

It is a cyclic number.

It is not a de Polignac number, because 474039989 - 2¹² = 474035893 is a prime.

It is a super-2 number, since 2×474039989² = 449427822342240242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 474039989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (474036989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237019994 + 237019995.

It is an arithmetic number, because the mean of its divisors is an integer number (237019995).

Almost surely, 2^474039989 is an apocalyptic number.

It is an amenable number.

474039989 is a deficient number, since it is larger than the sum of its proper divisors (1).

474039989 is an equidigital number, since it uses as much as digits as its factorization.

474039989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1959552, while the sum is 53.

The square root of 474039989 is about 21772.4594155093. The cubic root of 474039989 is about 779.7193758203.

The spelling of 474039989 in words is "four hundred seventy-four million, thirty-nine thousand, nine hundred eighty-nine".