220769739 has 32 divisors (see below), whose sum is σ = 335131200. Its totient is φ = 143596800.

The previous prime is 220769729. The next prime is 220769741. The reversal of 220769739 is 937967022.

It is a happy number.

It is not a de Polignac number, because 220769739 - 2⁴ = 220769723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220769694 and 220769703.

It is not an unprimeable number, because it can be changed into a prime (220769719) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 198517 + ... + 199625.

It is an arithmetic number, because the mean of its divisors is an integer number (10472850).

Almost surely, 2^220769739 is an apocalyptic number.

220769739 is a deficient number, since it is larger than the sum of its proper divisors (114361461).

220769739 is a wasteful number, since it uses less digits than its factorization.

220769739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292 (or 1286 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The square root of 220769739 is about 14858.3222134937. The cubic root of 220769739 is about 604.3843100096.

The spelling of 220769739 in words is "two hundred twenty million, seven hundred sixty-nine thousand, seven hundred thirty-nine".