398273745 has 8 divisors (see below), whose sum is σ = 637238016. Its totient is φ = 212412656.

The previous prime is 398273741. The next prime is 398273767. The reversal of 398273745 is 547372893.

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

It is a cyclic number.

It is not a de Polignac number, because 398273745 - 2² = 398273741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 398273694 and 398273703.

It is not an unprimeable number, because it can be changed into a prime (398273741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13275777 + ... + 13275806.

It is an arithmetic number, because the mean of its divisors is an integer number (79654752).

Almost surely, 2^398273745 is an apocalyptic number.

It is an amenable number.

398273745 is a deficient number, since it is larger than the sum of its proper divisors (238964271).

398273745 is a wasteful number, since it uses less digits than its factorization.

398273745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26551591.

The product of its digits is 1270080, while the sum is 48.

The square root of 398273745 is about 19956.7969624386. The cubic root of 398273745 is about 735.7448416720.

The spelling of 398273745 in words is "three hundred ninety-eight million, two hundred seventy-three thousand, seven hundred forty-five".