398743345 has 32 divisors (see below), whose sum is σ = 642458880. Its totient is φ = 229443840.

The previous prime is 398743307. The next prime is 398743357. The reversal of 398743345 is 543347893.

It is not a de Polignac number, because 398743345 - 2⁷ = 398743217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 398743295 and 398743304.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34830 + ... + 44839.

It is an arithmetic number, because the mean of its divisors is an integer number (20076840).

Almost surely, 2^398743345 is an apocalyptic number.

398743345 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

398743345 is a deficient number, since it is larger than the sum of its proper divisors (243715535).

398743345 is a wasteful number, since it uses less digits than its factorization.

398743345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79705.

The product of its digits is 1088640, while the sum is 46.

The square root of 398743345 is about 19968.5589114488. The cubic root of 398743345 is about 736.0338975261.

The spelling of 398743345 in words is "three hundred ninety-eight million, seven hundred forty-three thousand, three hundred forty-five".