7980829 has 4 divisors (see below), whose sum is σ = 8256060. Its totient is φ = 7705600.

The previous prime is 7980821. The next prime is 7980859. The reversal of 7980829 is 9280897.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6604900 + 1375929 = 2570^2 + 1173^2 .

It is a cyclic number.

It is not a de Polignac number, because 7980829 - 2³ = 7980821 is a prime.

It is a Duffinian number.

7980829 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7980821) 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, 137572 + ... + 137629.

It is an arithmetic number, because the mean of its divisors is an integer number (2064015).

Almost surely, 2^7980829 is an apocalyptic number.

It is an amenable number.

7980829 is a deficient number, since it is larger than the sum of its proper divisors (275231).

7980829 is a wasteful number, since it uses less digits than its factorization.

7980829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275230.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 7980829 is about 2825.0361059640. The cubic root of 7980829 is about 199.8401138829.

It can be divided in two parts, 79 and 80829, that added together give a palindrome (80908).

The spelling of 7980829 in words is "seven million, nine hundred eighty thousand, eight hundred twenty-nine".