3965406 has 8 divisors (see below), whose sum is σ = 7930824. Its totient is φ = 1321800.

The previous prime is 3965393. The next prime is 3965419. The reversal of 3965406 is 6045693.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3965393) and next prime (3965419).

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

3965406 is an admirable number.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330445 + ... + 330456.

It is an arithmetic number, because the mean of its divisors is an integer number (991353).

Almost surely, 2^3965406 is an apocalyptic number.

3965406 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3965406 is a wasteful number, since it uses less digits than its factorization.

3965406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660906.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 3965406 is about 1991.3327195625. The cubic root of 3965406 is about 158.2811583090.

It can be divided in two parts, 3965 and 406, that added together give a triangular number (4371 = T₉₃).

The spelling of 3965406 in words is "three million, nine hundred sixty-five thousand, four hundred six".