14921639 has 4 divisors (see below), whose sum is σ = 15069480. Its totient is φ = 14773800.

The previous prime is 14921623. The next prime is 14921653. The reversal of 14921639 is 93612941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93612941 = 2027 ⋅46183.

It is a cyclic number.

It is not a de Polignac number, because 14921639 - 2⁴ = 14921623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 14921599 and 14921608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14921239) 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, 73769 + ... + 73970.

It is an arithmetic number, because the mean of its divisors is an integer number (3767370).

Almost surely, 2^14921639 is an apocalyptic number.

14921639 is a deficient number, since it is larger than the sum of its proper divisors (147841).

14921639 is a wasteful number, since it uses less digits than its factorization.

14921639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147840.

The product of its digits is 11664, while the sum is 35.

The square root of 14921639 is about 3862.8537378472. The cubic root of 14921639 is about 246.1910022112.

The spelling of 14921639 in words is "fourteen million, nine hundred twenty-one thousand, six hundred thirty-nine".