38723829 has 4 divisors (see below), whose sum is σ = 51631776. Its totient is φ = 25815884.

The previous prime is 38723821. The next prime is 38723831. The reversal of 38723829 is 92832783.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 38723829 - 2³ = 38723821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38723821) 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, 6453969 + ... + 6453974.

It is an arithmetic number, because the mean of its divisors is an integer number (12907944).

Almost surely, 2^38723829 is an apocalyptic number.

It is an amenable number.

38723829 is a deficient number, since it is larger than the sum of its proper divisors (12907947).

38723829 is a wasteful number, since it uses less digits than its factorization.

38723829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12907946.

The product of its digits is 145152, while the sum is 42.

The square root of 38723829 is about 6222.8473386385. The cubic root of 38723829 is about 338.3187736434.

The spelling of 38723829 in words is "thirty-eight million, seven hundred twenty-three thousand, eight hundred twenty-nine".