398481049 has 4 divisors (see below), whose sum is σ = 415806336. Its totient is φ = 381155764.

The previous prime is 398481023. The next prime is 398481073. The reversal of 398481049 is 940184893.

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, and also an emirpimes, since its reverse is a distinct semiprime: 940184893 = 2399 ⋅391907.

It is a cyclic number.

It is not a de Polignac number, because 398481049 - 2⁷ = 398480921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398481019) 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, 8662609 + ... + 8662654.

It is an arithmetic number, because the mean of its divisors is an integer number (103951584).

Almost surely, 2^398481049 is an apocalyptic number.

It is an amenable number.

398481049 is a deficient number, since it is larger than the sum of its proper divisors (17325287).

398481049 is a wasteful number, since it uses less digits than its factorization.

398481049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17325286.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 398481049 is about 19961.9901061993. The cubic root of 398481049 is about 735.8724728094.

The spelling of 398481049 in words is "three hundred ninety-eight million, four hundred eighty-one thousand, forty-nine".