13851469 has 2 divisors, whose sum is σ = 13851470. Its totient is φ = 13851468.

The previous prime is 13851463. The next prime is 13851493. The reversal of 13851469 is 96415831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12517444 + 1334025 = 3538^2 + 1155^2 .

It is a cyclic number.

It is not a de Polignac number, because 13851469 - 2¹¹ = 13849421 is a prime.

It is a super-2 number, since 2×13851469² = 383726386915922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13851463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6925734 + 6925735.

It is an arithmetic number, because the mean of its divisors is an integer number (6925735).

Almost surely, 2^13851469 is an apocalyptic number.

It is an amenable number.

13851469 is a deficient number, since it is larger than the sum of its proper divisors (1).

13851469 is an equidigital number, since it uses as much as digits as its factorization.

13851469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 37.

The square root of 13851469 is about 3721.7561714868. The cubic root of 13851469 is about 240.1588589465.

The spelling of 13851469 in words is "thirteen million, eight hundred fifty-one thousand, four hundred sixty-nine".