3718399 has 4 divisors (see below), whose sum is σ = 3722320. Its totient is φ = 3714480.

The previous prime is 3718397. The next prime is 3718411. The reversal of 3718399 is 9938173.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9938173 = 7 ⋅1419739.

It is a cyclic number.

It is not a de Polignac number, because 3718399 - 2¹ = 3718397 is a prime.

It is a super-2 number, since 2×3718399² = 27652982246402, which contains 22 as substring.

It is a Duffinian number.

3718399 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3718397) 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, 454 + ... + 2764.

It is an arithmetic number, because the mean of its divisors is an integer number (930580).

Almost surely, 2^3718399 is an apocalyptic number.

3718399 is a deficient number, since it is larger than the sum of its proper divisors (3921).

3718399 is a wasteful number, since it uses less digits than its factorization.

3718399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3920.

The product of its digits is 40824, while the sum is 40.

The square root of 3718399 is about 1928.3150676173. The cubic root of 3718399 is about 154.9239863147.

The spelling of 3718399 in words is "three million, seven hundred eighteen thousand, three hundred ninety-nine".