3945949 has 8 divisors (see below), whose sum is σ = 4705920. Its totient is φ = 3235056.

The previous prime is 3945937. The next prime is 3945973. The reversal of 3945949 is 9495493.

3945949 is nontrivially palindromic in base 9.

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 3945949 - 2⁵ = 3945917 is a prime.

It is a Duffinian number.

3945949 is an undulating number in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3945919) 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, 12094 + ... + 12415.

It is an arithmetic number, because the mean of its divisors is an integer number (588240).

Almost surely, 2^3945949 is an apocalyptic number.

It is an amenable number.

3945949 is a deficient number, since it is larger than the sum of its proper divisors (759971).

3945949 is a wasteful number, since it uses less digits than its factorization.

3945949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24539.

The product of its digits is 174960, while the sum is 43.

The square root of 3945949 is about 1986.4412903481. The cubic root of 3945949 is about 158.0218551192.

The spelling of 3945949 in words is "three million, nine hundred forty-five thousand, nine hundred forty-nine".