13642859 has 2 divisors, whose sum is σ = 13642860. Its totient is φ = 13642858.

The previous prime is 13642807. The next prime is 13642879. The reversal of 13642859 is 95824631.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13642859 - 2¹² = 13638763 is a prime.

It is a super-3 number, since 3×13642859³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13642879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6821429 + 6821430.

It is an arithmetic number, because the mean of its divisors is an integer number (6821430).

Almost surely, 2^13642859 is an apocalyptic number.

13642859 is a deficient number, since it is larger than the sum of its proper divisors (1).

13642859 is an equidigital number, since it uses as much as digits as its factorization.

13642859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 38.

The square root of 13642859 is about 3693.6241010693. The cubic root of 13642859 is about 238.9471180772.

The spelling of 13642859 in words is "thirteen million, six hundred forty-two thousand, eight hundred fifty-nine".