4097391 has 8 divisors (see below), whose sum is σ = 5784624. Its totient is φ = 2570880.

The previous prime is 4097389. The next prime is 4097393. The reversal of 4097391 is 1937904.

It is an interprime number because it is at equal distance from previous prime (4097389) and next prime (4097393).

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

It is not a de Polignac number, because 4097391 - 2¹ = 4097389 is a prime.

It is a super-2 number, since 2×4097391² = 33577226013762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4097393) 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, 40120 + ... + 40221.

It is an arithmetic number, because the mean of its divisors is an integer number (723078).

Almost surely, 2^4097391 is an apocalyptic number.

4097391 is a deficient number, since it is larger than the sum of its proper divisors (1687233).

4097391 is a wasteful number, since it uses less digits than its factorization.

4097391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80361.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 4097391 is about 2024.2013239794. The cubic root of 4097391 is about 160.0181099293.

The spelling of 4097391 in words is "four million, ninety-seven thousand, three hundred ninety-one".