38478429 has 32 divisors (see below), whose sum is σ = 65854080. Its totient is φ = 21945600.

The previous prime is 38478403. The next prime is 38478457. The reversal of 38478429 is 92487483.

It is not a de Polignac number, because 38478429 - 2⁹ = 38477917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38478469) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1239 + ... + 8859.

It is an arithmetic number, because the mean of its divisors is an integer number (2057940).

Almost surely, 2^38478429 is an apocalyptic number.

It is an amenable number.

38478429 is a deficient number, since it is larger than the sum of its proper divisors (27375651).

38478429 is a wasteful number, since it uses less digits than its factorization.

38478429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7658 (or 7652 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 38478429 is about 6203.0983387336. The cubic root of 38478429 is about 337.6025959694.

The spelling of 38478429 in words is "thirty-eight million, four hundred seventy-eight thousand, four hundred twenty-nine".