784402013 has 2 divisors, whose sum is σ = 784402014. Its totient is φ = 784402012.

The previous prime is 784401997. The next prime is 784402019. The reversal of 784402013 is 310204487.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 755865049 + 28536964 = 27493^2 + 5342^2 .

It is a cyclic number.

It is not a de Polignac number, because 784402013 - 2⁴ = 784401997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (784402019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392201006 + 392201007.

It is an arithmetic number, because the mean of its divisors is an integer number (392201007).

Almost surely, 2^784402013 is an apocalyptic number.

It is an amenable number.

784402013 is a deficient number, since it is larger than the sum of its proper divisors (1).

784402013 is an equidigital number, since it uses as much as digits as its factorization.

784402013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 784402013 is about 28007.1778835355. The cubic root of 784402013 is about 922.2448382259.

The spelling of 784402013 in words is "seven hundred eighty-four million, four hundred two thousand, thirteen".