13900347 has 6 divisors (see below), whose sum is σ = 20078292. Its totient is φ = 9266892.

The previous prime is 13900333. The next prime is 13900357. The reversal of 13900347 is 74300931.

13900347 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13900347 - 2⁴ = 13900331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13900347.

It is not an unprimeable number, because it can be changed into a prime (13900357) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 772233 + ... + 772250.

It is an arithmetic number, because the mean of its divisors is an integer number (3346382).

Almost surely, 2^13900347 is an apocalyptic number.

13900347 is a deficient number, since it is larger than the sum of its proper divisors (6177945).

13900347 is a wasteful number, since it uses less digits than its factorization.

13900347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544489 (or 1544486 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 13900347 is about 3728.3169124955. The cubic root of 13900347 is about 240.4410120386.

It can be divided in two parts, 1390034 and 7, that added together give a square (1390041 = 1179²).

The spelling of 13900347 in words is "thirteen million, nine hundred thousand, three hundred forty-seven".