1009390172 has 24 divisors (see below), whose sum is σ = 2053000320. Its totient is φ = 425262960.

The previous prime is 1009390157. The next prime is 1009390201. The reversal of 1009390172 is 2710939001.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 303854 + ... + 307157.

It is an arithmetic number, because the mean of its divisors is an integer number (85541680).

Almost surely, 2^1009390172 is an apocalyptic number.

It is an amenable number.

1009390172 is an abundant number, since it is smaller than the sum of its proper divisors (1043610148).

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

1009390172 is a wasteful number, since it uses less digits than its factorization.

1009390172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611081 (or 611079 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 1009390172 is about 31770.9013406922. The cubic root of 1009390172 is about 1003.1203108666.

The spelling of 1009390172 in words is "one billion, nine million, three hundred ninety thousand, one hundred seventy-two".