3992047 has 4 divisors (see below), whose sum is σ = 4089456. Its totient is φ = 3894640.

The previous prime is 3992029. The next prime is 3992057. The reversal of 3992047 is 7402993.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7402993 = 13 ⋅569461.

It is a cyclic number.

It is not a de Polignac number, because 3992047 - 2¹⁵ = 3959279 is a prime.

It is a Duffinian number.

3992047 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3992057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48643 + ... + 48724.

It is an arithmetic number, because the mean of its divisors is an integer number (1022364).

Almost surely, 2^3992047 is an apocalyptic number.

3992047 is a deficient number, since it is larger than the sum of its proper divisors (97409).

3992047 is an equidigital number, since it uses as much as digits as its factorization.

3992047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97408.

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

The square root of 3992047 is about 1998.0107607318. The cubic root of 3992047 is about 158.6348303904.

The spelling of 3992047 in words is "three million, nine hundred ninety-two thousand, forty-seven".