861093407 has 2 divisors, whose sum is σ = 861093408. Its totient is φ = 861093406.

The previous prime is 861093371. The next prime is 861093413. The reversal of 861093407 is 704390168.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 861093407 - 2⁸ = 861093151 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (861093427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430546703 + 430546704.

It is an arithmetic number, because the mean of its divisors is an integer number (430546704).

Almost surely, 2^861093407 is an apocalyptic number.

861093407 is a deficient number, since it is larger than the sum of its proper divisors (1).

861093407 is an equidigital number, since it uses as much as digits as its factorization.

861093407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 861093407 is about 29344.3931100986. The cubic root of 861093407 is about 951.3713921989.

The spelling of 861093407 in words is "eight hundred sixty-one million, ninety-three thousand, four hundred seven".