770421839 has 16 divisors (see below), whose sum is σ = 853416864. Its totient is φ = 689664000.

The previous prime is 770421809. The next prime is 770421851. The reversal of 770421839 is 938124077.

It is a cyclic number.

It is not a de Polignac number, because 770421839 - 2¹² = 770417743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 770421796 and 770421805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (770421809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212627 + ... + 216219.

It is an arithmetic number, because the mean of its divisors is an integer number (53338554).

Almost surely, 2^770421839 is an apocalyptic number.

770421839 is a deficient number, since it is larger than the sum of its proper divisors (82995025).

770421839 is a wasteful number, since it uses less digits than its factorization.

770421839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3898.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 770421839 is about 27756.4738214349. The cubic root of 770421839 is about 916.7329928574.

The spelling of 770421839 in words is "seven hundred seventy million, four hundred twenty-one thousand, eight hundred thirty-nine".