3997426 has 8 divisors (see below), whose sum is σ = 6020784. Its totient is φ = 1990500.

The previous prime is 3997403. The next prime is 3997453. The reversal of 3997426 is 6247993.

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

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, 3480 + ... + 4483.

It is an arithmetic number, because the mean of its divisors is an integer number (752598).

Almost surely, 2^3997426 is an apocalyptic number.

3997426 is a deficient number, since it is larger than the sum of its proper divisors (2023358).

3997426 is a wasteful number, since it uses less digits than its factorization.

3997426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8216.

The product of its digits is 81648, while the sum is 40.

The square root of 3997426 is about 1999.3563964436. The cubic root of 3997426 is about 158.7060481380.

It can be divided in two parts, 39974 and 26, that added together give a square (40000 = 200²).

The spelling of 3997426 in words is "three million, nine hundred ninety-seven thousand, four hundred twenty-six".