398755149 has 8 divisors (see below), whose sum is σ = 572571552. Its totient is φ = 245387760.

The previous prime is 398755129. The next prime is 398755151. The reversal of 398755149 is 941557893.

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

It is a de Polignac number, because none of the positive numbers 2^k-398755149 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398755129) 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, 5112207 + ... + 5112284.

It is an arithmetic number, because the mean of its divisors is an integer number (71571444).

Almost surely, 2^398755149 is an apocalyptic number.

398755149 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

398755149 is a deficient number, since it is larger than the sum of its proper divisors (173816403).

398755149 is a wasteful number, since it uses less digits than its factorization.

398755149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10224507.

The product of its digits is 1360800, while the sum is 51.

The square root of 398755149 is about 19968.8544739051. The cubic root of 398755149 is about 736.0411603920.

The spelling of 398755149 in words is "three hundred ninety-eight million, seven hundred fifty-five thousand, one hundred forty-nine".