209013004 has 6 divisors (see below), whose sum is σ = 365772764. Its totient is φ = 104506500.

The previous prime is 209012953. The next prime is 209013043. The reversal of 209013004 is 400310902.

It is a super-2 number, since 2×209013004² = 87372871682208032, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26126622 + ... + 26126629.

Almost surely, 2^209013004 is an apocalyptic number.

It is an amenable number.

209013004 is a deficient number, since it is larger than the sum of its proper divisors (156759760).

209013004 is a wasteful number, since it uses less digits than its factorization.

209013004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52253255 (or 52253253 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 209013004 is about 14457.2820405497. The cubic root of 209013004 is about 593.4595218989.

Adding to 209013004 its reverse (400310902), we get a palindrome (609323906).

The spelling of 209013004 in words is "two hundred nine million, thirteen thousand, four".