813699492 has 48 divisors (see below), whose sum is σ = 2057090112. Its totient is φ = 249338880.

The previous prime is 813699473. The next prime is 813699521. The reversal of 813699492 is 294996318.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37609 + ... + 55152.

It is an arithmetic number, because the mean of its divisors is an integer number (42856044).

Almost surely, 2^813699492 is an apocalyptic number.

It is an amenable number.

813699492 is an abundant number, since it is smaller than the sum of its proper divisors (1243390620).

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

813699492 is a wasteful number, since it uses less digits than its factorization.

813699492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92828 (or 92826 counting only the distinct ones).

The product of its digits is 839808, while the sum is 51.

The square root of 813699492 is about 28525.4183492548. The cubic root of 813699492 is about 933.5867549368.

The spelling of 813699492 in words is "eight hundred thirteen million, six hundred ninety-nine thousand, four hundred ninety-two".