787723049 has 2 divisors, whose sum is σ = 787723050. Its totient is φ = 787723048.

The previous prime is 787723039. The next prime is 787723103. The reversal of 787723049 is 940327787.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 406224025 + 381499024 = 20155^2 + 19532^2 .

It is a cyclic number.

It is not a de Polignac number, because 787723049 - 2¹⁶ = 787657513 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 787722994 and 787723012.

It is not a weakly prime, because it can be changed into another prime (787723039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 393861524 + 393861525.

It is an arithmetic number, because the mean of its divisors is an integer number (393861525).

Almost surely, 2^787723049 is an apocalyptic number.

It is an amenable number.

787723049 is a deficient number, since it is larger than the sum of its proper divisors (1).

787723049 is an equidigital number, since it uses as much as digits as its factorization.

787723049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 592704, while the sum is 47.

The square root of 787723049 is about 28066.4042762873. The cubic root of 787723049 is about 923.5445527056.

The spelling of 787723049 in words is "seven hundred eighty-seven million, seven hundred twenty-three thousand, forty-nine".