409019628 has 12 divisors (see below), whose sum is σ = 954379160. Its totient is φ = 136339872.

The previous prime is 409019627. The next prime is 409019641. The reversal of 409019628 is 826910904.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×409019628³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (409019627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17042473 + ... + 17042496.

Almost surely, 2^409019628 is an apocalyptic number.

It is an amenable number.

409019628 is an abundant number, since it is smaller than the sum of its proper divisors (545359532).

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

409019628 is a wasteful number, since it uses less digits than its factorization.

409019628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34084976 (or 34084974 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 409019628 is about 20224.2336814031. The cubic root of 409019628 is about 742.3032860964.

The spelling of 409019628 in words is "four hundred nine million, nineteen thousand, six hundred twenty-eight".