398946121 has 8 divisors (see below), whose sum is σ = 456059264. Its totient is φ = 341863200.

The previous prime is 398946101. The next prime is 398946137. The reversal of 398946121 is 121649893.

It is a happy number.

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

It is not a de Polignac number, because 398946121 - 2⁷ = 398945993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398946101) 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, 47581 + ... + 55333.

It is an arithmetic number, because the mean of its divisors is an integer number (57007408).

Almost surely, 2^398946121 is an apocalyptic number.

It is an amenable number.

398946121 is a deficient number, since it is larger than the sum of its proper divisors (57113143).

398946121 is an equidigital number, since it uses as much as digits as its factorization.

398946121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15111.

The product of its digits is 93312, while the sum is 43.

The square root of 398946121 is about 19973.6356480236. The cubic root of 398946121 is about 736.1586433631.

The spelling of 398946121 in words is "three hundred ninety-eight million, nine hundred forty-six thousand, one hundred twenty-one".