8397407 has 4 divisors (see below), whose sum is σ = 8457960. Its totient is φ = 8336856.

The previous prime is 8397397. The next prime is 8397419. The reversal of 8397407 is 7047938.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7047938 = 2 ⋅3523969.

It is a cyclic number.

It is not a de Polignac number, because 8397407 - 2⁴ = 8397391 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 (8397437) 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, 30068 + ... + 30345.

It is an arithmetic number, because the mean of its divisors is an integer number (2114490).

Almost surely, 2^8397407 is an apocalyptic number.

8397407 is a deficient number, since it is larger than the sum of its proper divisors (60553).

8397407 is a wasteful number, since it uses less digits than its factorization.

8397407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60552.

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

The square root of 8397407 is about 2897.8279797117. The cubic root of 8397407 is about 203.2583524186.

The spelling of 8397407 in words is "eight million, three hundred ninety-seven thousand, four hundred seven".