398040349 has 8 divisors (see below), whose sum is σ = 456512960. Its totient is φ = 339970176.

The previous prime is 398040347. The next prime is 398040359. The reversal of 398040349 is 943040893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 398040349 - 2¹ = 398040347 is a prime.

It is a super-2 number, since 2×398040349² = 316872238864083602, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398040343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98484 + ... + 102445.

It is an arithmetic number, because the mean of its divisors is an integer number (57064120).

Almost surely, 2^398040349 is an apocalyptic number.

It is an amenable number.

398040349 is a deficient number, since it is larger than the sum of its proper divisors (58472611).

398040349 is a wasteful number, since it uses less digits than its factorization.

398040349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201219.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 398040349 is about 19950.9485739400. The cubic root of 398040349 is about 735.6010934253.

The spelling of 398040349 in words is "three hundred ninety-eight million, forty thousand, three hundred forty-nine".