3961407 has 8 divisors (see below), whose sum is σ = 5314176. Its totient is φ = 2624792.

The previous prime is 3961393. The next prime is 3961411. The reversal of 3961407 is 7041693.

It is a happy number.

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 3961407 - 2⁶ = 3961343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3961417) 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, 3453 + ... + 4454.

It is an arithmetic number, because the mean of its divisors is an integer number (664272).

Almost surely, 2^3961407 is an apocalyptic number.

3961407 is a deficient number, since it is larger than the sum of its proper divisors (1352769).

3961407 is a wasteful number, since it uses less digits than its factorization.

3961407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8077.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 3961407 is about 1990.3283648685. The cubic root of 3961407 is about 158.2279330531.

The spelling of 3961407 in words is "three million, nine hundred sixty-one thousand, four hundred seven".