3729721223 has 4 divisors (see below), whose sum is σ = 3926022360. Its totient is φ = 3533420088.

The previous prime is 3729721213. The next prime is 3729721267. The reversal of 3729721223 is 3221279273.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3221279273 = 79 ⋅40775687.

It is a cyclic number.

It is not a de Polignac number, because 3729721223 - 2⁶ = 3729721159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3729721213) 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, 98150540 + ... + 98150577.

It is an arithmetic number, because the mean of its divisors is an integer number (981505590).

Almost surely, 2^3729721223 is an apocalyptic number.

3729721223 is a deficient number, since it is larger than the sum of its proper divisors (196301137).

3729721223 is a wasteful number, since it uses less digits than its factorization.

3729721223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196301136.

The product of its digits is 63504, while the sum is 38.

The square root of 3729721223 is about 61071.4435968235. The cubic root of 3729721223 is about 1550.8107063862.

The spelling of 3729721223 in words is "three billion, seven hundred twenty-nine million, seven hundred twenty-one thousand, two hundred twenty-three".