38949430 has 48 divisors (see below), whose sum is σ = 79978320. Its totient is φ = 13613184.

The previous prime is 38949401. The next prime is 38949433. The reversal of 38949430 is 3494983.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38949433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31504 + ... + 32716.

It is an arithmetic number, because the mean of its divisors is an integer number (1666215).

Almost surely, 2^38949430 is an apocalyptic number.

38949430 is an abundant number, since it is smaller than the sum of its proper divisors (41028890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38949430 is a wasteful number, since it uses less digits than its factorization.

38949430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265 (or 1252 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 38949430 is about 6240.9478446787. The cubic root of 38949430 is about 338.9745052079.

The spelling of 38949430 in words is "thirty-eight million, nine hundred forty-nine thousand, four hundred thirty".