1009430398 has 4 divisors (see below), whose sum is σ = 1514145600. Its totient is φ = 504715198.

The previous prime is 1009430393. The next prime is 1009430413. The reversal of 1009430398 is 8930349001.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009430393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252357598 + ... + 252357601.

It is an arithmetic number, because the mean of its divisors is an integer number (378536400).

Almost surely, 2^1009430398 is an apocalyptic number.

1009430398 is a deficient number, since it is larger than the sum of its proper divisors (504715202).

1009430398 is an equidigital number, since it uses as much as digits as its factorization.

1009430398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504715201.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 1009430398 is about 31771.5343979481. The cubic root of 1009430398 is about 1003.1336360679.

Adding to 1009430398 its reverse (8930349001), we get a palindrome (9939779399).

The spelling of 1009430398 in words is "one billion, nine million, four hundred thirty thousand, three hundred ninety-eight".