3897407 has 2 divisors, whose sum is σ = 3897408. Its totient is φ = 3897406.

The previous prime is 3897401. The next prime is 3897409. The reversal of 3897407 is 7047983.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3897407 - 2⁸ = 3897151 is a prime.

Together with 3897409, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3897401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1948703 + 1948704.

It is an arithmetic number, because the mean of its divisors is an integer number (1948704).

Almost surely, 2^3897407 is an apocalyptic number.

3897407 is a deficient number, since it is larger than the sum of its proper divisors (1).

3897407 is an equidigital number, since it uses as much as digits as its factorization.

3897407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 3897407 is about 1974.1851483587. The cubic root of 3897407 is about 157.3711989721.

The spelling of 3897407 in words is "three million, eight hundred ninety-seven thousand, four hundred seven".