609038881 has 4 divisors (see below), whose sum is σ = 664406064. Its totient is φ = 553671700.

The previous prime is 609038867. The next prime is 609038921. The reversal of 609038881 is 188830906.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-609038881 is a prime.

It is a super-2 number, since 2×609038881² = 741856717139464322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (609038861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27683575 + ... + 27683596.

It is an arithmetic number, because the mean of its divisors is an integer number (166101516).

Almost surely, 2^609038881 is an apocalyptic number.

It is an amenable number.

609038881 is a deficient number, since it is larger than the sum of its proper divisors (55367183).

609038881 is a wasteful number, since it uses less digits than its factorization.

609038881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55367182.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 609038881 is about 24678.7131147473. The cubic root of 609038881 is about 847.6469550802.

The spelling of 609038881 in words is "six hundred nine million, thirty-eight thousand, eight hundred eighty-one".