7982399 has 4 divisors (see below), whose sum is σ = 8113320. Its totient is φ = 7851480.

The previous prime is 7982329. The next prime is 7982423. The reversal of 7982399 is 9932897.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7982399 is a prime.

It is a d-powerful number, because it can be written as 7⁸ + 9 + 8 + 2¹⁵ + 3¹³ + 9⁵ + 9⁶ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7982329) 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, 65369 + ... + 65490.

It is an arithmetic number, because the mean of its divisors is an integer number (2028330).

Almost surely, 2^7982399 is an apocalyptic number.

7982399 is a deficient number, since it is larger than the sum of its proper divisors (130921).

7982399 is a wasteful number, since it uses less digits than its factorization.

7982399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130920.

The product of its digits is 244944, while the sum is 47.

The square root of 7982399 is about 2825.3139648542. The cubic root of 7982399 is about 199.8532173005.

The spelling of 7982399 in words is "seven million, nine hundred eighty-two thousand, three hundred ninety-nine".