13859402 has 4 divisors (see below), whose sum is σ = 20789106. Its totient is φ = 6929700.

The previous prime is 13859393. The next prime is 13859411. The reversal of 13859402 is 20495831.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (13859393) and next prime (13859411).

It can be written as a sum of positive squares in only one way, i.e., 13476241 + 383161 = 3671^2 + 619^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3464849 + ... + 3464852.

Almost surely, 2^13859402 is an apocalyptic number.

13859402 is a deficient number, since it is larger than the sum of its proper divisors (6929704).

13859402 is an equidigital number, since it uses as much as digits as its factorization.

13859402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6929703.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 13859402 is about 3722.8217792422. The cubic root of 13859402 is about 240.2046980468.

The spelling of 13859402 in words is "thirteen million, eight hundred fifty-nine thousand, four hundred two".