398307349 has 16 divisors (see below), whose sum is σ = 443880000. Its totient is φ = 354332160.

The previous prime is 398307319. The next prime is 398307379. The reversal of 398307349 is 943703893.

It is an interprime number because it is at equal distance from previous prime (398307319) and next prime (398307379).

It is a cyclic number.

It is not a de Polignac number, because 398307349 - 2¹³ = 398299157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 398307299 and 398307308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398307319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318277 + ... + 319525.

It is an arithmetic number, because the mean of its divisors is an integer number (27742500).

Almost surely, 2^398307349 is an apocalyptic number.

It is an amenable number.

398307349 is a deficient number, since it is larger than the sum of its proper divisors (45572651).

398307349 is a wasteful number, since it uses less digits than its factorization.

398307349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1860.

The product of its (nonzero) digits is 489888, while the sum is 46.

The square root of 398307349 is about 19957.6388633525. The cubic root of 398307349 is about 735.7655336999.

The spelling of 398307349 in words is "three hundred ninety-eight million, three hundred seven thousand, three hundred forty-nine".