8870399 has 2 divisors, whose sum is σ = 8870400. Its totient is φ = 8870398.

The previous prime is 8870383. The next prime is 8870401. The reversal of 8870399 is 9930788.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8870399 - 2⁴ = 8870383 is a prime.

Together with 8870401, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8870369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4435199 + 4435200.

It is an arithmetic number, because the mean of its divisors is an integer number (4435200).

Almost surely, 2^8870399 is an apocalyptic number.

8870399 is a deficient number, since it is larger than the sum of its proper divisors (1).

8870399 is an equidigital number, since it uses as much as digits as its factorization.

8870399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 8870399 is about 2978.3215071580. The cubic root of 8870399 is about 207.0051030660.

It can be divided in two parts, 8870 and 399, that multiplied together give a triangular number (3539130 = T₂₆₆₀).

The spelling of 8870399 in words is "eight million, eight hundred seventy thousand, three hundred ninety-nine".