1009509494 has 8 divisors (see below), whose sum is σ = 1730587728. Its totient is φ = 432646920.

The previous prime is 1009509427. The next prime is 1009509499. The reversal of 1009509494 is 4949059001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1009509494² = 2038218836952272072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009509499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36053897 + ... + 36053924.

It is an arithmetic number, because the mean of its divisors is an integer number (216323466).

Almost surely, 2^1009509494 is an apocalyptic number.

1009509494 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1009509494 is a deficient number, since it is larger than the sum of its proper divisors (721078234).

1009509494 is an equidigital number, since it uses as much as digits as its factorization.

1009509494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72107830.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 1009509494 is about 31772.7791356060. The cubic root of 1009509494 is about 1003.1598362517.

The spelling of 1009509494 in words is "one billion, nine million, five hundred nine thousand, four hundred ninety-four".