13899740 has 12 divisors (see below), whose sum is σ = 29189496. Its totient is φ = 5559888.

The previous prime is 13899737. The next prime is 13899757. The reversal of 13899740 is 4799831.

It is a happy number.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 347474 + ... + 347513.

It is an arithmetic number, because the mean of its divisors is an integer number (2432458).

Almost surely, 2^13899740 is an apocalyptic number.

13899740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13899740 is an abundant number, since it is smaller than the sum of its proper divisors (15289756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13899740 is a wasteful number, since it uses less digits than its factorization.

13899740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694996 (or 694994 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 13899740 is about 3728.2355075826. The cubic root of 13899740 is about 240.4375121303.

Subtracting from 13899740 its reverse (4799831), we obtain a palindrome (9099909).

The spelling of 13899740 in words is "thirteen million, eight hundred ninety-nine thousand, seven hundred forty".