398410291 has 4 divisors (see below), whose sum is σ = 398582392. Its totient is φ = 398238192.

The previous prime is 398410277. The next prime is 398410321. The reversal of 398410291 is 192014893.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 398410291 - 2¹⁵ = 398377523 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 398410291.

It is not an unprimeable number, because it can be changed into a prime (398410261) 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, 82530 + ... + 87223.

It is an arithmetic number, because the mean of its divisors is an integer number (99645598).

Almost surely, 2^398410291 is an apocalyptic number.

398410291 is a deficient number, since it is larger than the sum of its proper divisors (172101).

398410291 is a wasteful number, since it uses less digits than its factorization.

398410291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172100.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 398410291 is about 19960.2177092335. The cubic root of 398410291 is about 735.8289141117.

The spelling of 398410291 in words is "three hundred ninety-eight million, four hundred ten thousand, two hundred ninety-one".