3958405 has 8 divisors (see below), whose sum is σ = 5181984. Its totient is φ = 2878800.

The previous prime is 3958397. The next prime is 3958439. The reversal of 3958405 is 5048593.

3958405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 3958405 - 2³ = 3958397 is a prime.

It is a Duffinian number.

3958405 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35931 + ... + 36040.

It is an arithmetic number, because the mean of its divisors is an integer number (647748).

Almost surely, 2^3958405 is an apocalyptic number.

It is an amenable number.

3958405 is a deficient number, since it is larger than the sum of its proper divisors (1223579).

3958405 is a wasteful number, since it uses less digits than its factorization.

3958405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71987.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 3958405 is about 1989.5740750221. The cubic root of 3958405 is about 158.1879539671.

The spelling of 3958405 in words is "three million, nine hundred fifty-eight thousand, four hundred five".