85831469 has 4 divisors (see below), whose sum is σ = 89563296. Its totient is φ = 82099644.

The previous prime is 85831463. The next prime is 85831481. The reversal of 85831469 is 96413858.

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, and also an emirpimes, since its reverse is a distinct semiprime: 96413858 = 2 ⋅48206929.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85831469 is a prime.

It is a super-2 number, since 2×85831469² = 14734082141395922, 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 (85831463) 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, 1865879 + ... + 1865924.

It is an arithmetic number, because the mean of its divisors is an integer number (22390824).

Almost surely, 2^85831469 is an apocalyptic number.

It is an amenable number.

85831469 is a deficient number, since it is larger than the sum of its proper divisors (3731827).

85831469 is a wasteful number, since it uses less digits than its factorization.

85831469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3731826.

The product of its digits is 207360, while the sum is 44.

The square root of 85831469 is about 9264.5274569187. The cubic root of 85831469 is about 441.1119756516. Note that the first 3 decimals are identical.

The spelling of 85831469 in words is "eighty-five million, eight hundred thirty-one thousand, four hundred sixty-nine".