3872929 has 2 divisors, whose sum is σ = 3872930. Its totient is φ = 3872928.

The previous prime is 3872917. The next prime is 3872933. The reversal of 3872929 is 9292783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3841600 + 31329 = 1960^2 + 177^2 .

It is an emirp because it is prime and its reverse (9292783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3872929 - 2⁹ = 3872417 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 3872891 and 3872900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3872959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1936464 + 1936465.

It is an arithmetic number, because the mean of its divisors is an integer number (1936465).

Almost surely, 2^3872929 is an apocalyptic number.

It is an amenable number.

3872929 is a deficient number, since it is larger than the sum of its proper divisors (1).

3872929 is an equidigital number, since it uses as much as digits as its factorization.

3872929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 40.

The square root of 3872929 is about 1967.9758636731. The cubic root of 3872929 is about 157.0410457005.

The spelling of 3872929 in words is "three million, eight hundred seventy-two thousand, nine hundred twenty-nine".