3897724838 has 16 divisors (see below), whose sum is σ = 6711254784. Its totient is φ = 1663093320.

The previous prime is 3897724811. The next prime is 3897724841. The reversal of 3897724838 is 8384277983.

It is a happy number.

3897724838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 610058 + ... + 616413.

It is an arithmetic number, because the mean of its divisors is an integer number (419453424).

Almost surely, 2^3897724838 is an apocalyptic number.

3897724838 is a deficient number, since it is larger than the sum of its proper divisors (2813529946).

3897724838 is a wasteful number, since it uses less digits than its factorization.

3897724838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226707.

The product of its digits is 16257024, while the sum is 59.

The square root of 3897724838 is about 62431.7614520045. The cubic root of 3897724838 is about 1573.7547678954.

The spelling of 3897724838 in words is "three billion, eight hundred ninety-seven million, seven hundred twenty-four thousand, eight hundred thirty-eight".