878896247 has 2 divisors, whose sum is σ = 878896248. Its totient is φ = 878896246.

The previous prime is 878896211. The next prime is 878896267. The reversal of 878896247 is 742698878.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 878896247 - 2²² = 874701943 is a prime.

It is a super-2 number, since 2×878896247² = 1544917225981370018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (878896267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439448123 + 439448124.

It is an arithmetic number, because the mean of its divisors is an integer number (439448124).

Almost surely, 2^878896247 is an apocalyptic number.

878896247 is a deficient number, since it is larger than the sum of its proper divisors (1).

878896247 is an equidigital number, since it uses as much as digits as its factorization.

878896247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10838016, while the sum is 59.

The square root of 878896247 is about 29646.1843581936. The cubic root of 878896247 is about 957.8831565139.

The spelling of 878896247 in words is "eight hundred seventy-eight million, eight hundred ninety-six thousand, two hundred forty-seven".