835138807 has 2 divisors, whose sum is σ = 835138808. Its totient is φ = 835138806.

The previous prime is 835138771. The next prime is 835138823. The reversal of 835138807 is 708831538.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 835138807 - 2⁷ = 835138679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (835138847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 417569403 + 417569404.

It is an arithmetic number, because the mean of its divisors is an integer number (417569404).

Almost surely, 2^835138807 is an apocalyptic number.

835138807 is a deficient number, since it is larger than the sum of its proper divisors (1).

835138807 is an equidigital number, since it uses as much as digits as its factorization.

835138807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 835138807 is about 28898.7682609484. The cubic root of 835138807 is about 941.7151449742.

The spelling of 835138807 in words is "eight hundred thirty-five million, one hundred thirty-eight thousand, eight hundred seven".