3900994 has 8 divisors (see below), whose sum is σ = 5881788. Its totient is φ = 1940400.

The previous prime is 3900989. The next prime is 3901013. The reversal of 3900994 is 4990093.

It can be written as a sum of positive squares in 2 ways, for example, as 2608225 + 1292769 = 1615^2 + 1137^2 .

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

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, 4557 + ... + 5344.

Almost surely, 2^3900994 is an apocalyptic number.

3900994 is a deficient number, since it is larger than the sum of its proper divisors (1980794).

3900994 is a wasteful number, since it uses less digits than its factorization.

3900994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10100.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 3900994 is about 1975.0934155123. The cubic root of 3900994 is about 157.4194633182.

The spelling of 3900994 in words is "three million, nine hundred thousand, nine hundred ninety-four".