1009392220 has 12 divisors (see below), whose sum is σ = 2119723704. Its totient is φ = 403756880.

The previous prime is 1009392199. The next prime is 1009392229. The reversal of 1009392220 is 222939001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009392229) 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, 25234786 + ... + 25234825.

It is an arithmetic number, because the mean of its divisors is an integer number (176643642).

Almost surely, 2^1009392220 is an apocalyptic number.

1009392220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1009392220 is an abundant number, since it is smaller than the sum of its proper divisors (1110331484).

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

1009392220 is a wasteful number, since it uses less digits than its factorization.

1009392220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50469620 (or 50469618 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 1009392220 is about 31770.9335714266. The cubic root of 1009392220 is about 1003.1209892924.

The spelling of 1009392220 in words is "one billion, nine million, three hundred ninety-two thousand, two hundred twenty".