220923739 has 4 divisors (see below), whose sum is σ = 222663424. Its totient is φ = 219184056.

The previous prime is 220923727. The next prime is 220923743. The reversal of 220923739 is 937329022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220923739 - 2¹³ = 220915547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220923698 and 220923707.

It is not an unprimeable number, because it can be changed into a prime (220923709) 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, 869652 + ... + 869905.

It is an arithmetic number, because the mean of its divisors is an integer number (55665856).

Almost surely, 2^220923739 is an apocalyptic number.

220923739 is a deficient number, since it is larger than the sum of its proper divisors (1739685).

220923739 is a wasteful number, since it uses less digits than its factorization.

220923739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1739684.

The product of its (nonzero) digits is 40824, while the sum is 37.

The square root of 220923739 is about 14863.5035910111. The cubic root of 220923739 is about 604.5248086587.

The spelling of 220923739 in words is "two hundred twenty million, nine hundred twenty-three thousand, seven hundred thirty-nine".