16390747 has 4 divisors (see below), whose sum is σ = 16519936. Its totient is φ = 16261560.

The previous prime is 16390721. The next prime is 16390753. The reversal of 16390747 is 74709361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74709361 = 43 ⋅1737427.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16390747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16390247) 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, 64404 + ... + 64657.

It is an arithmetic number, because the mean of its divisors is an integer number (4129984).

Almost surely, 2^16390747 is an apocalyptic number.

16390747 is a deficient number, since it is larger than the sum of its proper divisors (129189).

16390747 is a wasteful number, since it uses less digits than its factorization.

16390747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129188.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 16390747 is about 4048.5487523309. The cubic root of 16390747 is about 254.0190274460.

The spelling of 16390747 in words is "sixteen million, three hundred ninety thousand, seven hundred forty-seven".