256846469 has 4 divisors (see below), whose sum is σ = 280196160. Its totient is φ = 233496780.

The previous prime is 256846463. The next prime is 256846477. The reversal of 256846469 is 964648652.

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 256846469 - 2⁴ = 256846453 is a prime.

It is a super-2 number, since 2×256846469² = 131940217275535922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256846463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11674829 + ... + 11674850.

It is an arithmetic number, because the mean of its divisors is an integer number (70049040).

Almost surely, 2^256846469 is an apocalyptic number.

It is an amenable number.

256846469 is a deficient number, since it is larger than the sum of its proper divisors (23349691).

256846469 is a wasteful number, since it uses less digits than its factorization.

256846469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23349690.

The product of its digits is 2488320, while the sum is 50.

The square root of 256846469 is about 16026.4303261831. The cubic root of 256846469 is about 635.6594872045.

The spelling of 256846469 in words is "two hundred fifty-six million, eight hundred forty-six thousand, four hundred sixty-nine".