428783479 has 2 divisors, whose sum is σ = 428783480. Its totient is φ = 428783478.

The previous prime is 428783461. The next prime is 428783483. The reversal of 428783479 is 974387824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 428783479 - 2¹⁵ = 428750711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428733479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214391739 + 214391740.

It is an arithmetic number, because the mean of its divisors is an integer number (214391740).

Almost surely, 2^428783479 is an apocalyptic number.

428783479 is a deficient number, since it is larger than the sum of its proper divisors (1).

428783479 is an equidigital number, since it uses as much as digits as its factorization.

428783479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2709504, while the sum is 52.

The square root of 428783479 is about 20707.0876513333. The cubic root of 428783479 is about 754.0717677538.

The spelling of 428783479 in words is "four hundred twenty-eight million, seven hundred eighty-three thousand, four hundred seventy-nine".