783215047 has 2 divisors, whose sum is σ = 783215048. Its totient is φ = 783215046.

The previous prime is 783215039. The next prime is 783215057. The reversal of 783215047 is 740512387.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 783215047 - 2³ = 783215039 is a prime.

It is a super-2 number, since 2×783215047² = 1226851619694424418, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 783214997 and 783215015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (783215057) 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, 391607523 + 391607524.

It is an arithmetic number, because the mean of its divisors is an integer number (391607524).

Almost surely, 2^783215047 is an apocalyptic number.

783215047 is a deficient number, since it is larger than the sum of its proper divisors (1).

783215047 is an equidigital number, since it uses as much as digits as its factorization.

783215047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 783215047 is about 27985.9794718713. The cubic root of 783215047 is about 921.7794196138.

The spelling of 783215047 in words is "seven hundred eighty-three million, two hundred fifteen thousand, forty-seven".