782438497 has 4 divisors (see below), whose sum is σ = 782635696. Its totient is φ = 782241300.

The previous prime is 782438477. The next prime is 782438507. The reversal of 782438497 is 794834287.

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 a cyclic number.

It is not a de Polignac number, because 782438497 - 2¹¹ = 782436449 is a prime.

It is a super-2 number, since 2×782438497² = 1224420003175238018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (782438407) 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, 92523 + ... + 100624.

It is an arithmetic number, because the mean of its divisors is an integer number (195658924).

Almost surely, 2^782438497 is an apocalyptic number.

It is an amenable number.

782438497 is a deficient number, since it is larger than the sum of its proper divisors (197199).

782438497 is a wasteful number, since it uses less digits than its factorization.

782438497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197198.

The product of its digits is 2709504, while the sum is 52.

The square root of 782438497 is about 27972.1021197907. The cubic root of 782438497 is about 921.4746738042.

The spelling of 782438497 in words is "seven hundred eighty-two million, four hundred thirty-eight thousand, four hundred ninety-seven".