398435441 has 4 divisors (see below), whose sum is σ = 403235952. Its totient is φ = 393634932.

The previous prime is 398435423. The next prime is 398435459. The reversal of 398435441 is 144534893.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (398435423) and next prime (398435459).

It is a cyclic number.

It is not a de Polignac number, because 398435441 - 2¹⁸ = 398173297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398435461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2400131 + ... + 2400296.

It is an arithmetic number, because the mean of its divisors is an integer number (100808988).

Almost surely, 2^398435441 is an apocalyptic number.

It is an amenable number.

398435441 is a deficient number, since it is larger than the sum of its proper divisors (4800511).

398435441 is an equidigital number, since it uses as much as digits as its factorization.

398435441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4800510.

The product of its digits is 207360, while the sum is 41.

The square root of 398435441 is about 19960.8477024399. The cubic root of 398435441 is about 735.8443970684.

The spelling of 398435441 in words is "three hundred ninety-eight million, four hundred thirty-five thousand, four hundred forty-one".