398394773 has 8 divisors (see below), whose sum is σ = 456339648. Its totient is φ = 340707744.

The previous prime is 398394757. The next prime is 398394781. The reversal of 398394773 is 377493893.

It is a happy number.

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 398394773 - 2⁴ = 398394757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398394713) 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, 61136 + ... + 67337.

It is an arithmetic number, because the mean of its divisors is an integer number (57042456).

Almost surely, 2^398394773 is an apocalyptic number.

It is an amenable number.

398394773 is a deficient number, since it is larger than the sum of its proper divisors (57944875).

398394773 is a wasteful number, since it uses less digits than its factorization.

398394773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128923.

The product of its digits is 3429216, while the sum is 53.

The square root of 398394773 is about 19959.8289822333. The cubic root of 398394773 is about 735.8193605254.

The spelling of 398394773 in words is "three hundred ninety-eight million, three hundred ninety-four thousand, seven hundred seventy-three".