3909746 has 4 divisors (see below), whose sum is σ = 5864622. Its totient is φ = 1954872.

The previous prime is 3909739. The next prime is 3909749. The reversal of 3909746 is 6479093.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3330625 + 579121 = 1825^2 + 761^2 .

It is a super-2 number, since 2×3909746² = 30572227569032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3909749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 977435 + ... + 977438.

Almost surely, 2^3909746 is an apocalyptic number.

3909746 is a deficient number, since it is larger than the sum of its proper divisors (1954876).

3909746 is a wasteful number, since it uses less digits than its factorization.

3909746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954875.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 3909746 is about 1977.3077656248. The cubic root of 3909746 is about 157.5371005234.

The spelling of 3909746 in words is "three million, nine hundred nine thousand, seven hundred forty-six".