398669050 has 24 divisors (see below), whose sum is σ = 798566076. Its totient is φ = 147200640.

The previous prime is 398669009. The next prime is 398669059. The reversal of 398669050 is 50966893.

It can be written as a sum of positive squares in 6 ways, for example, as 3017169 + 395651881 = 1737^2 + 19891^2 .

It is a super-2 number, since 2×398669050² = 317874022855805000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (398669059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 306019 + ... + 307318.

Almost surely, 2^398669050 is an apocalyptic number.

398669050 is an abundant number, since it is smaller than the sum of its proper divisors (399897026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

398669050 is a wasteful number, since it uses less digits than its factorization.

398669050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613362 (or 613357 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 398669050 is about 19966.6985252946. The cubic root of 398669050 is about 735.9881813733.

The spelling of 398669050 in words is "three hundred ninety-eight million, six hundred sixty-nine thousand, fifty".