199829390 has 16 divisors (see below), whose sum is σ = 380851632. Its totient is φ = 75229824.

The previous prime is 199829387. The next prime is 199829393. The reversal of 199829390 is 93928991.

It is an interprime number because it is at equal distance from previous prime (199829387) and next prime (199829393).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199829393) 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, 587564 + ... + 587903.

It is an arithmetic number, because the mean of its divisors is an integer number (23803227).

Almost surely, 2^199829390 is an apocalyptic number.

199829390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199829390 is a deficient number, since it is larger than the sum of its proper divisors (181022242).

199829390 is a wasteful number, since it uses less digits than its factorization.

199829390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175491.

The product of its (nonzero) digits is 314928, while the sum is 50.

The square root of 199829390 is about 14136.1023623911. The cubic root of 199829390 is about 584.6372114471.

The spelling of 199829390 in words is "one hundred ninety-nine million, eight hundred twenty-nine thousand, three hundred ninety".