764447442 has 32 divisors (see below), whose sum is σ = 1669054464. Its totient is φ = 231488400.

The previous prime is 764447429. The next prime is 764447443. The reversal of 764447442 is 244744467.

It is a junction number, because it is equal to n+sod(n) for n = 764447394 and 764447403.

It is not an unprimeable number, because it can be changed into a prime (764447443) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 118767 + ... + 125037.

It is an arithmetic number, because the mean of its divisors is an integer number (52157952).

Almost surely, 2^764447442 is an apocalyptic number.

764447442 is an abundant number, since it is smaller than the sum of its proper divisors (904607022).

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

764447442 is a wasteful number, since it uses less digits than its factorization.

764447442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8134.

The product of its digits is 602112, while the sum is 42.

The square root of 764447442 is about 27648.6426791624. The cubic root of 764447442 is about 914.3571751785.

The spelling of 764447442 in words is "seven hundred sixty-four million, four hundred forty-seven thousand, four hundred forty-two".