656383449 has 4 divisors (see below), whose sum is σ = 875177936. Its totient is φ = 437588964.

The previous prime is 656383423. The next prime is 656383451. The reversal of 656383449 is 944383656.

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 not a de Polignac number, because 656383449 - 2⁵ = 656383417 is a prime.

It is a super-2 number, since 2×656383449² = 861678464242271202, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 656383398 and 656383407.

It is not an unprimeable number, because it can be changed into a prime (656383459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109397239 + ... + 109397244.

It is an arithmetic number, because the mean of its divisors is an integer number (218794484).

Almost surely, 2^656383449 is an apocalyptic number.

It is an amenable number.

656383449 is a deficient number, since it is larger than the sum of its proper divisors (218794487).

656383449 is a wasteful number, since it uses less digits than its factorization.

656383449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218794486.

The product of its digits is 1866240, while the sum is 48.

The square root of 656383449 is about 25619.9814402743. The cubic root of 656383449 is about 869.0655616458.

The spelling of 656383449 in words is "six hundred fifty-six million, three hundred eighty-three thousand, four hundred forty-nine".