3999370 has 8 divisors (see below), whose sum is σ = 7198884. Its totient is φ = 1599744.

The previous prime is 3999337. The next prime is 3999379. The reversal of 3999370 is 739993.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3932289 + 67081 = 1983^2 + 259^2 .

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

It is not an unprimeable number, because it can be changed into a prime (3999379) 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, 199959 + ... + 199978.

Almost surely, 2^3999370 is an apocalyptic number.

3999370 is a deficient number, since it is larger than the sum of its proper divisors (3199514).

3999370 is a wasteful number, since it uses less digits than its factorization.

3999370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399944.

The product of its (nonzero) digits is 45927, while the sum is 40.

The square root of 3999370 is about 1999.8424937979. The cubic root of 3999370 is about 158.7317709037.

The spelling of 3999370 in words is "three million, nine hundred ninety-nine thousand, three hundred seventy".