38709405 has 24 divisors (see below), whose sum is σ = 76682112. Its totient is φ = 17695584.

The previous prime is 38709401. The next prime is 38709409. The reversal of 38709405 is 50490783.

38709405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (38709401) and next prime (38709409).

It is not a de Polignac number, because 38709405 - 2² = 38709401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38709405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38709401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61129 + ... + 61758.

It is an arithmetic number, because the mean of its divisors is an integer number (3195088).

Almost surely, 2^38709405 is an apocalyptic number.

38709405 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

38709405 is a deficient number, since it is larger than the sum of its proper divisors (37972707).

38709405 is a wasteful number, since it uses less digits than its factorization.

38709405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122905 (or 122902 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 38709405 is about 6221.6882757014. The cubic root of 38709405 is about 338.2767623363.

The spelling of 38709405 in words is "thirty-eight million, seven hundred nine thousand, four hundred five".