398884847 has 2 divisors, whose sum is σ = 398884848. Its totient is φ = 398884846.

The previous prime is 398884831. The next prime is 398884861. The reversal of 398884847 is 748488893.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 398884847 - 2⁴ = 398884831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398884807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199442423 + 199442424.

It is an arithmetic number, because the mean of its divisors is an integer number (199442424).

Almost surely, 2^398884847 is an apocalyptic number.

398884847 is a deficient number, since it is larger than the sum of its proper divisors (1).

398884847 is an equidigital number, since it uses as much as digits as its factorization.

398884847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12386304, while the sum is 59.

The square root of 398884847 is about 19972.1017171453. The cubic root of 398884847 is about 736.1209526476.

The spelling of 398884847 in words is "three hundred ninety-eight million, eight hundred eighty-four thousand, eight hundred forty-seven".