38945439 has 24 divisors (see below), whose sum is σ = 61082112. Its totient is φ = 23768640.

The previous prime is 38945429. The next prime is 38945441. The reversal of 38945439 is 93454983.

It is a happy number.

It is not a de Polignac number, because 38945439 - 2¹¹ = 38943391 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38945394 and 38945403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38945429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13549 + ... + 16169.

It is an arithmetic number, because the mean of its divisors is an integer number (2545088).

Almost surely, 2^38945439 is an apocalyptic number.

38945439 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

38945439 is a deficient number, since it is larger than the sum of its proper divisors (22136673).

38945439 is a wasteful number, since it uses less digits than its factorization.

38945439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2767 (or 2764 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 38945439 is about 6240.6280933893. The cubic root of 38945439 is about 338.9629270028.

The spelling of 38945439 in words is "thirty-eight million, nine hundred forty-five thousand, four hundred thirty-nine".