202470989 has 6 divisors (see below), whose sum is σ = 235527534. Its totient is φ = 173546520.

The previous prime is 202470979. The next prime is 202471007. The reversal of 202470989 is 989074202.

It can be written as a sum of positive squares in only one way, i.e., 194825764 + 7645225 = 13958^2 + 2765^2 .

It is a de Polignac number, because none of the positive numbers 2^k-202470989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202470979) 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 in 5 ways as a sum of consecutive naturals, for example, 2065982 + ... + 2066079.

It is an arithmetic number, because the mean of its divisors is an integer number (39254589).

Almost surely, 2^202470989 is an apocalyptic number.

It is an amenable number.

202470989 is a deficient number, since it is larger than the sum of its proper divisors (33056545).

202470989 is an equidigital number, since it uses as much as digits as its factorization.

202470989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4132075 (or 4132068 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 202470989 is about 14229.2300916107. The cubic root of 202470989 is about 587.2021018175.

The spelling of 202470989 in words is "two hundred two million, four hundred seventy thousand, nine hundred eighty-nine".