2147720959 has 4 divisors (see below), whose sum is σ = 2274057504. Its totient is φ = 2021384416.

The previous prime is 2147720923. The next prime is 2147720963. The reversal of 2147720959 is 9590277412.

It is a happy number.

2147720959 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2147720959 - 2⁹ = 2147720447 is a prime.

It is a super-2 number, since 2×2147720959² = 9225410635455759362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2147420959) 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, 63168247 + ... + 63168280.

It is an arithmetic number, because the mean of its divisors is an integer number (568514376).

Almost surely, 2^2147720959 is an apocalyptic number.

2147720959 is a deficient number, since it is larger than the sum of its proper divisors (126336545).

2147720959 is a wasteful number, since it uses less digits than its factorization.

2147720959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126336544.

The product of its (nonzero) digits is 317520, while the sum is 46.

The square root of 2147720959 is about 46343.5104302641. The cubic root of 2147720959 is about 1290.2066770191.

It can be divided in two parts, 21477 and 20959, that added together give a square (42436 = 206²).

The spelling of 2147720959 in words is "two billion, one hundred forty-seven million, seven hundred twenty thousand, nine hundred fifty-nine".