399898 has 8 divisors (see below), whose sum is σ = 607680. Its totient is φ = 197340.

The previous prime is 399887. The next prime is 399899. The reversal of 399898 is 898993.

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

It is not an unprimeable number, because it can be changed into a prime (399899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1108 + ... + 1423.

It is an arithmetic number, because the mean of its divisors is an integer number (75960).

2³⁹⁹⁸⁹⁸ is an apocalyptic number.

399898 is a deficient number, since it is larger than the sum of its proper divisors (207782).

399898 is a wasteful number, since it uses less digits than its factorization.

399898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2612.

The product of its digits is 139968, while the sum is 46.

The square root of 399898 is about 632.3748888120. The cubic root of 399898 is about 73.6743665868.

It can be divided in two parts, 3998 and 98, that added together give a 12-th power (4096 = 2¹²).

The spelling of 399898 in words is "three hundred ninety-nine thousand, eight hundred ninety-eight".