4009397 has 16 divisors (see below), whose sum is σ = 4758912. Its totient is φ = 3307200.

The previous prime is 4009391. The next prime is 4009409. The reversal of 4009397 is 7939004.

It is a happy number.

It is not a de Polignac number, because 4009397 - 2⁴ = 4009381 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 (4009391) 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, 37418 + ... + 37524.

It is an arithmetic number, because the mean of its divisors is an integer number (297432).

Almost surely, 2^4009397 is an apocalyptic number.

It is an amenable number.

4009397 is a deficient number, since it is larger than the sum of its proper divisors (749515).

4009397 is a wasteful number, since it uses less digits than its factorization.

With its successor (4009398) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (268).

4009397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 4009397 is about 2002.3478718744. The cubic root of 4009397 is about 158.8643147118.

The spelling of 4009397 in words is "four million, nine thousand, three hundred ninety-seven".