398604007 has 4 divisors (see below), whose sum is σ = 415934640. Its totient is φ = 381273376.

The previous prime is 398604001. The next prime is 398604029. The reversal of 398604007 is 700406893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 700406893 = 2591 ⋅270323.

It is a cyclic number.

It is not a de Polignac number, because 398604007 - 2³ = 398603999 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 (398604001) 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 3 ways as a sum of consecutive naturals, for example, 8665282 + ... + 8665327.

It is an arithmetic number, because the mean of its divisors is an integer number (103983660).

Almost surely, 2^398604007 is an apocalyptic number.

398604007 is a deficient number, since it is larger than the sum of its proper divisors (17330633).

398604007 is a wasteful number, since it uses less digits than its factorization.

398604007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17330632.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 398604007 is about 19965.0696718043. The cubic root of 398604007 is about 735.9481536169.

The spelling of 398604007 in words is "three hundred ninety-eight million, six hundred four thousand, seven".