3997451 has 4 divisors (see below), whose sum is σ = 4002072. Its totient is φ = 3992832.

The previous prime is 3997403. The next prime is 3997453. The reversal of 3997451 is 1547993.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 3997451 - 2¹⁴ = 3981067 is a prime.

It is a super-2 number, since 2×3997451² = 31959228994802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3997453) 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, 581 + ... + 2886.

It is an arithmetic number, because the mean of its divisors is an integer number (1000518).

Almost surely, 2^3997451 is an apocalyptic number.

3997451 is a deficient number, since it is larger than the sum of its proper divisors (4621).

3997451 is a wasteful number, since it uses less digits than its factorization.

3997451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4620.

The product of its digits is 34020, while the sum is 38.

The square root of 3997451 is about 1999.3626484457. The cubic root of 3997451 is about 158.7063789878.

The spelling of 3997451 in words is "three million, nine hundred ninety-seven thousand, four hundred fifty-one".