408398847 has 8 divisors (see below), whose sum is σ = 544947456. Its totient is φ = 272058072.

The previous prime is 408398789. The next prime is 408398891. The reversal of 408398847 is 748893804.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 408398847 - 2¹⁹ = 407874559 is a prime.

It is a super-3 number, since 3×408398847³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 408398847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408398147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47313 + ... + 55274.

It is an arithmetic number, because the mean of its divisors is an integer number (68118432).

Almost surely, 2^408398847 is an apocalyptic number.

408398847 is a deficient number, since it is larger than the sum of its proper divisors (136548609).

408398847 is a wasteful number, since it uses less digits than its factorization.

408398847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103917.

The product of its (nonzero) digits is 1548288, while the sum is 51.

The square root of 408398847 is about 20208.8803994680. The cubic root of 408398847 is about 741.9275575098.

The spelling of 408398847 in words is "four hundred eight million, three hundred ninety-eight thousand, eight hundred forty-seven".