190409835 has 72 divisors (see below), whose sum is σ = 389724048. Its totient is φ = 79094400.

The previous prime is 190409803. The next prime is 190409837. The reversal of 190409835 is 538904091.

It is not a de Polignac number, because 190409835 - 2⁵ = 190409803 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 190409793 and 190409802.

It is not an unprimeable number, because it can be changed into a prime (190409837) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 87865 + ... + 90005.

It is an arithmetic number, because the mean of its divisors is an integer number (5412834).

Almost surely, 2^190409835 is an apocalyptic number.

190409835 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

190409835 is an abundant number, since it is smaller than the sum of its proper divisors (199314213).

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

190409835 is a wasteful number, since it uses less digits than its factorization.

190409835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2185 (or 2167 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 190409835 is about 13798.9070219347. The cubic root of 190409835 is about 575.3027617902.

The spelling of 190409835 in words is "one hundred ninety million, four hundred nine thousand, eight hundred thirty-five".