769940 has 24 divisors (see below), whose sum is σ = 1634472. Its totient is φ = 304640.

The previous prime is 769927. The next prime is 769943. The reversal of 769940 is 49967.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 148996 + 620944 = 386^2 + 788^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 769940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (769943) by changing a digit.

769940 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2600 + ... + 2880.

It is an arithmetic number, because the mean of its divisors is an integer number (68103).

2⁷⁶⁹⁹⁴⁰ is an apocalyptic number.

It is an amenable number.

769940 is an abundant number, since it is smaller than the sum of its proper divisors (864532).

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

769940 is a wasteful number, since it uses less digits than its factorization.

769940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 769940 is about 877.4622499002. The cubic root of 769940 is about 91.6541837915.

The spelling of 769940 in words is "seven hundred sixty-nine thousand, nine hundred forty".