13649438 has 8 divisors (see below), whose sum is σ = 22335480. Its totient is φ = 6204280.

The previous prime is 13649431. The next prime is 13649483. The reversal of 13649438 is 83494631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13649431) 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, 310193 + ... + 310236.

It is an arithmetic number, because the mean of its divisors is an integer number (2791935).

Almost surely, 2^13649438 is an apocalyptic number.

13649438 is a deficient number, since it is larger than the sum of its proper divisors (8686042).

13649438 is a wasteful number, since it uses less digits than its factorization.

13649438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620442.

The product of its digits is 62208, while the sum is 38.

The square root of 13649438 is about 3694.5145824587. The cubic root of 13649438 is about 238.9855210850.

The spelling of 13649438 in words is "thirteen million, six hundred forty-nine thousand, four hundred thirty-eight".