4004397 has 16 divisors (see below), whose sum is σ = 6008960. Its totient is φ = 2668140.

The previous prime is 4004393. The next prime is 4004417. The reversal of 4004397 is 7934004.

It is not a de Polignac number, because 4004397 - 2² = 4004393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

4004397 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4004397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4004393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1272 + ... + 3102.

It is an arithmetic number, because the mean of its divisors is an integer number (375560).

Almost surely, 2^4004397 is an apocalyptic number.

It is an amenable number.

4004397 is a deficient number, since it is larger than the sum of its proper divisors (2004563).

4004397 is an frugal number, since it uses more digits than its factorization.

4004397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852 (or 1834 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 4004397 is about 2001.0989480783. The cubic root of 4004397 is about 158.7982489174.

The spelling of 4004397 in words is "four million, four thousand, three hundred ninety-seven".