8372407 has 4 divisors (see below), whose sum is σ = 8813080. Its totient is φ = 7931736.

The previous prime is 8372383. The next prime is 8372411. The reversal of 8372407 is 7042738.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8372407 - 2¹⁹ = 7848119 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8372417) 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, 220308 + ... + 220345.

It is an arithmetic number, because the mean of its divisors is an integer number (2203270).

Almost surely, 2^8372407 is an apocalyptic number.

8372407 is a deficient number, since it is larger than the sum of its proper divisors (440673).

8372407 is a wasteful number, since it uses less digits than its factorization.

8372407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440672.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 8372407 is about 2893.5111888500. The cubic root of 8372407 is about 203.0564444625.

The spelling of 8372407 in words is "eight million, three hundred seventy-two thousand, four hundred seven".