398678354 has 8 divisors (see below), whose sum is σ = 601978368. Its totient is φ = 198018900.

The previous prime is 398678333. The next prime is 398678359. The reversal of 398678354 is 453876893.

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

It is a junction number, because it is equal to n+sod(n) for n = 398678296 and 398678305.

It is not an unprimeable number, because it can be changed into a prime (398678359) 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, 659762 + ... + 660365.

It is an arithmetic number, because the mean of its divisors is an integer number (75247296).

Almost surely, 2^398678354 is an apocalyptic number.

398678354 is a deficient number, since it is larger than the sum of its proper divisors (203300014).

398678354 is a wasteful number, since it uses less digits than its factorization.

398678354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320280.

The product of its digits is 4354560, while the sum is 53.

The square root of 398678354 is about 19966.9315118773. The cubic root of 398678354 is about 735.9939067411.

The spelling of 398678354 in words is "three hundred ninety-eight million, six hundred seventy-eight thousand, three hundred fifty-four".