409099545 has 64 divisors (see below), whose sum is σ = 769440000. Its totient is φ = 205659648.

The previous prime is 409099531. The next prime is 409099547. The reversal of 409099545 is 545990904.

It is not a de Polignac number, because 409099545 - 2¹¹ = 409097497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 409099545.

It is not an unprimeable number, because it can be changed into a prime (409099547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 894957 + ... + 895413.

It is an arithmetic number, because the mean of its divisors is an integer number (12022500).

Almost surely, 2^409099545 is an apocalyptic number.

409099545 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

409099545 is a deficient number, since it is larger than the sum of its proper divisors (360340455).

409099545 is a wasteful number, since it uses less digits than its factorization.

409099545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839 (or 833 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The square root of 409099545 is about 20226.2093581571. The cubic root of 409099545 is about 742.3516283474.

The spelling of 409099545 in words is "four hundred nine million, ninety-nine thousand, five hundred forty-five".