280068479 has 2 divisors, whose sum is σ = 280068480. Its totient is φ = 280068478.

The previous prime is 280068463. The next prime is 280068487. The reversal of 280068479 is 974860082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 280068479 - 2⁴ = 280068463 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (280068409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140034239 + 140034240.

It is an arithmetic number, because the mean of its divisors is an integer number (140034240).

Almost surely, 2^280068479 is an apocalyptic number.

280068479 is a deficient number, since it is larger than the sum of its proper divisors (1).

280068479 is an equidigital number, since it uses as much as digits as its factorization.

280068479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 280068479 is about 16735.2466070865. The cubic root of 280068479 is about 654.2665908690.

The spelling of 280068479 in words is "two hundred eighty million, sixty-eight thousand, four hundred seventy-nine".