894547879 has 2 divisors, whose sum is σ = 894547880. Its totient is φ = 894547878.

The previous prime is 894547807. The next prime is 894547883. The reversal of 894547879 is 978745498.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 894547879 - 2²³ = 886159271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (894545879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 447273939 + 447273940.

It is an arithmetic number, because the mean of its divisors is an integer number (447273940).

Almost surely, 2^894547879 is an apocalyptic number.

894547879 is a deficient number, since it is larger than the sum of its proper divisors (1).

894547879 is an equidigital number, since it uses as much as digits as its factorization.

894547879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20321280, while the sum is 61.

The square root of 894547879 is about 29908.9932796141. The cubic root of 894547879 is about 963.5358177857.

The spelling of 894547879 in words is "eight hundred ninety-four million, five hundred forty-seven thousand, eight hundred seventy-nine".