784634749 has 2 divisors, whose sum is σ = 784634750. Its totient is φ = 784634748.

The previous prime is 784634743. The next prime is 784634771. The reversal of 784634749 is 947436487.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 783440100 + 1194649 = 27990^2 + 1093^2 .

It is a cyclic number.

It is not a de Polignac number, because 784634749 - 2¹⁵ = 784601981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 784634696 and 784634705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (784634743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392317374 + 392317375.

It is an arithmetic number, because the mean of its divisors is an integer number (392317375).

Almost surely, 2^784634749 is an apocalyptic number.

It is an amenable number.

784634749 is a deficient number, since it is larger than the sum of its proper divisors (1).

784634749 is an equidigital number, since it uses as much as digits as its factorization.

784634749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4064256, while the sum is 52.

The square root of 784634749 is about 28011.3325102538. The cubic root of 784634749 is about 922.3360407583.

The spelling of 784634749 in words is "seven hundred eighty-four million, six hundred thirty-four thousand, seven hundred forty-nine".