398826207149 has 4 divisors (see below), whose sum is σ = 398885571840. Its totient is φ = 398766842460.

The previous prime is 398826207121. The next prime is 398826207167. The reversal of 398826207149 is 941702628893.

It is a happy number.

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: 941702628893 = 13 ⋅72438663761.

It is a cyclic number.

It is not a de Polignac number, because 398826207149 - 2²⁴ = 398809429933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398826207179) 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, 29672267 + ... + 29685704.

It is an arithmetic number, because the mean of its divisors is an integer number (99721392960).

Almost surely, 2^398826207149 is an apocalyptic number.

It is an amenable number.

398826207149 is a deficient number, since it is larger than the sum of its proper divisors (59364691).

398826207149 is an equidigital number, since it uses as much as digits as its factorization.

398826207149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59364690.

The product of its (nonzero) digits is 10450944, while the sum is 59.

The spelling of 398826207149 in words is "three hundred ninety-eight billion, eight hundred twenty-six million, two hundred seven thousand, one hundred forty-nine".