199389770 has 24 divisors (see below), whose sum is σ = 381260844. Its totient is φ = 75063296.

The previous prime is 199389767. The next prime is 199389793. The reversal of 199389770 is 77983991.

199389770 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 103408561 + 95981209 = 10169^2 + 9797^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31607 + ... + 37386.

Almost surely, 2^199389770 is an apocalyptic number.

199389770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199389770 is a deficient number, since it is larger than the sum of its proper divisors (181871074).

199389770 is a wasteful number, since it uses less digits than its factorization.

199389770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69034 (or 69017 counting only the distinct ones).

The product of its (nonzero) digits is 857304, while the sum is 53.

The square root of 199389770 is about 14120.5442529670. The cubic root of 199389770 is about 584.2081672516.

The spelling of 199389770 in words is "one hundred ninety-nine million, three hundred eighty-nine thousand, seven hundred seventy".