3918739 has 8 divisors (see below), whose sum is σ = 4379760. Its totient is φ = 3475200.

The previous prime is 3918697. The next prime is 3918743. The reversal of 3918739 is 9378193.

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

It is a cyclic number.

It is not a de Polignac number, because 3918739 - 2¹¹ = 3916691 is a prime.

3918739 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3918139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3894 + ... + 4795.

It is an arithmetic number, because the mean of its divisors is an integer number (547470).

Almost surely, 2^3918739 is an apocalyptic number.

3918739 is a deficient number, since it is larger than the sum of its proper divisors (461021).

3918739 is a wasteful number, since it uses less digits than its factorization.

3918739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8741.

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

The square root of 3918739 is about 1979.5805111185. The cubic root of 3918739 is about 157.6577943229.

The spelling of 3918739 in words is "three million, nine hundred eighteen thousand, seven hundred thirty-nine".