3918994 has 8 divisors (see below), whose sum is σ = 5939388. Its totient is φ = 1939200.

The previous prime is 3918983. The next prime is 3919007. The reversal of 3918994 is 4998193.

It can be written as a sum of positive squares in 2 ways, for example, as 3286969 + 632025 = 1813^2 + 795^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 3918994.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9907 + ... + 10294.

Almost surely, 2^3918994 is an apocalyptic number.

3918994 is a deficient number, since it is larger than the sum of its proper divisors (2020394).

3918994 is a wasteful number, since it uses less digits than its factorization.

3918994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20300.

The product of its digits is 69984, while the sum is 43.

The square root of 3918994 is about 1979.6449176557. The cubic root of 3918994 is about 157.6612139490.

The spelling of 3918994 in words is "three million, nine hundred eighteen thousand, nine hundred ninety-four".