9780499 has 2 divisors, whose sum is σ = 9780500. Its totient is φ = 9780498.

The previous prime is 9780493. The next prime is 9780517. The reversal of 9780499 is 9940879.

9780499 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9780499 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9780493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4890249 + 4890250.

It is an arithmetic number, because the mean of its divisors is an integer number (4890250).

Almost surely, 2^9780499 is an apocalyptic number.

9780499 is a deficient number, since it is larger than the sum of its proper divisors (1).

9780499 is an equidigital number, since it uses as much as digits as its factorization.

9780499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 9780499 is about 3127.3789345073. The cubic root of 9780499 is about 213.8554574636.

It can be divided in two parts, 97804 and 99, that added together give a triangular number (97903 = T₄₄₂).

The spelling of 9780499 in words is "nine million, seven hundred eighty thousand, four hundred ninety-nine".