13939466 has 4 divisors (see below), whose sum is σ = 20909202. Its totient is φ = 6969732.

The previous prime is 13939463. The next prime is 13939469. The reversal of 13939466 is 66493931.

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 (13939463) and next prime (13939469).

It can be written as a sum of positive squares in only one way, i.e., 12103441 + 1836025 = 3479^2 + 1355^2 .

It is not an unprimeable number, because it can be changed into a prime (13939463) 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, 3484865 + ... + 3484868.

Almost surely, 2^13939466 is an apocalyptic number.

13939466 is a deficient number, since it is larger than the sum of its proper divisors (6969736).

13939466 is an equidigital number, since it uses as much as digits as its factorization.

13939466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6969735.

The product of its digits is 104976, while the sum is 41.

The square root of 13939466 is about 3733.5594276776. The cubic root of 13939466 is about 240.6663541900. Note that the first 3 decimals are identical.

The spelling of 13939466 in words is "thirteen million, nine hundred thirty-nine thousand, four hundred sixty-six".