3997423 has 8 divisors (see below), whose sum is σ = 4202496. Its totient is φ = 3795000.

The previous prime is 3997403. The next prime is 3997453. The reversal of 3997423 is 3247993.

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

It is not a de Polignac number, because 3997423 - 2⁹ = 3996911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3997403) 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, 2898 + ... + 4048.

It is an arithmetic number, because the mean of its divisors is an integer number (525312).

Almost surely, 2^3997423 is an apocalyptic number.

3997423 is a deficient number, since it is larger than the sum of its proper divisors (205073).

3997423 is a wasteful number, since it uses less digits than its factorization.

3997423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325.

The product of its digits is 40824, while the sum is 37.

The square root of 3997423 is about 1999.3556462020. The cubic root of 3997423 is about 158.7060084359.

The spelling of 3997423 in words is "three million, nine hundred ninety-seven thousand, four hundred twenty-three".