3729388621 has 8 divisors (see below), whose sum is σ = 4272790464. Its totient is φ = 3188644800.

The previous prime is 3729388547. The next prime is 3729388657. The reversal of 3729388621 is 1268839273.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3729388621 - 2⁹ = 3729388109 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 (3729388321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 661495 + ... + 667108.

It is an arithmetic number, because the mean of its divisors is an integer number (534098808).

Almost surely, 2^3729388621 is an apocalyptic number.

It is an amenable number.

3729388621 is a deficient number, since it is larger than the sum of its proper divisors (543401843).

3729388621 is a wasteful number, since it uses less digits than its factorization.

3729388621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329011.

The product of its digits is 870912, while the sum is 49.

The square root of 3729388621 is about 61068.7204794730. The cubic root of 3729388621 is about 1550.7646065980.

The spelling of 3729388621 in words is "three billion, seven hundred twenty-nine million, three hundred eighty-eight thousand, six hundred twenty-one".