862940497 has 4 divisors (see below), whose sum is σ = 863015076. Its totient is φ = 862865920.

The previous prime is 862940479. The next prime is 862940531. The reversal of 862940497 is 794049268.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 281937681 + 581002816 = 16791^2 + 24104^2 .

It is a cyclic number.

It is not a de Polignac number, because 862940497 - 2¹⁵ = 862907729 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 862940497.

It is not an unprimeable number, because it can be changed into a prime (862940437) 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, 15808 + ... + 44449.

It is an arithmetic number, because the mean of its divisors is an integer number (215753769).

Almost surely, 2^862940497 is an apocalyptic number.

It is an amenable number.

862940497 is a deficient number, since it is larger than the sum of its proper divisors (74579).

862940497 is a wasteful number, since it uses less digits than its factorization.

862940497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74578.

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 862940497 is about 29375.8488728411. The cubic root of 862940497 is about 952.0511533756.

The spelling of 862940497 in words is "eight hundred sixty-two million, nine hundred forty thousand, four hundred ninety-seven".