3955390 has 32 divisors (see below), whose sum is σ = 7698240. Its totient is φ = 1457664.

The previous prime is 3955387. The next prime is 3955403. The reversal of 3955390 is 935593.

It is a happy number.

It is a super-2 number, since 2×3955390² = 31290220104200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8791 + ... + 9229.

It is an arithmetic number, because the mean of its divisors is an integer number (240570).

Almost surely, 2^3955390 is an apocalyptic number.

3955390 is a deficient number, since it is larger than the sum of its proper divisors (3742850).

3955390 is a wasteful number, since it uses less digits than its factorization.

3955390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516.

The product of its (nonzero) digits is 18225, while the sum is 34.

The square root of 3955390 is about 1988.8162308268. The cubic root of 3955390 is about 158.1477814042.

The spelling of 3955390 in words is "three million, nine hundred fifty-five thousand, three hundred ninety".