3992407 has 2 divisors, whose sum is σ = 3992408. Its totient is φ = 3992406.

The previous prime is 3992393. The next prime is 3992419. The reversal of 3992407 is 7042993.

It is a strong prime.

It is an emirp because it is prime and its reverse (7042993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3992407 - 2⁷ = 3992279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3992447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1996203 + 1996204.

It is an arithmetic number, because the mean of its divisors is an integer number (1996204).

Almost surely, 2^3992407 is an apocalyptic number.

3992407 is a deficient number, since it is larger than the sum of its proper divisors (1).

3992407 is an equidigital number, since it uses as much as digits as its factorization.

3992407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 3992407 is about 1998.1008483057. The cubic root of 3992407 is about 158.6395987730.

The spelling of 3992407 in words is "three million, nine hundred ninety-two thousand, four hundred seven".