531878469 has 4 divisors (see below), whose sum is σ = 709171296. Its totient is φ = 354585644.

The previous prime is 531878453. The next prime is 531878491. The reversal of 531878469 is 964878135.

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 not a de Polignac number, because 531878469 - 2⁴ = 531878453 is a prime.

It is a super-2 number, since 2×531878469² = 565789411571567922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531878429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88646409 + ... + 88646414.

It is an arithmetic number, because the mean of its divisors is an integer number (177292824).

Almost surely, 2^531878469 is an apocalyptic number.

It is an amenable number.

531878469 is a deficient number, since it is larger than the sum of its proper divisors (177292827).

531878469 is a wasteful number, since it uses less digits than its factorization.

531878469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177292826.

The product of its digits is 1451520, while the sum is 51.

The square root of 531878469 is about 23062.4905203233. The cubic root of 531878469 is about 810.2221963202. Note that the first 3 decimals are identical.

The spelling of 531878469 in words is "five hundred thirty-one million, eight hundred seventy-eight thousand, four hundred sixty-nine".