798937509 has 4 divisors (see below), whose sum is σ = 1065250016. Its totient is φ = 532625004.

The previous prime is 798937483. The next prime is 798937523. The reversal of 798937509 is 905739897.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 798937509 - 2¹³ = 798929317 is a prime.

It is a super-2 number, since 2×798937509² = 1276602286574250162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (798937109) 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, 133156249 + ... + 133156254.

It is an arithmetic number, because the mean of its divisors is an integer number (266312504).

Almost surely, 2^798937509 is an apocalyptic number.

It is an amenable number.

798937509 is a deficient number, since it is larger than the sum of its proper divisors (266312507).

798937509 is a wasteful number, since it uses less digits than its factorization.

798937509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266312506.

The product of its (nonzero) digits is 4286520, while the sum is 57.

The square root of 798937509 is about 28265.4826422617. The cubic root of 798937509 is about 927.9066141195.

The spelling of 798937509 in words is "seven hundred ninety-eight million, nine hundred thirty-seven thousand, five hundred nine".