39428930 has 16 divisors (see below), whose sum is σ = 71051904. Its totient is φ = 15753840.

The previous prime is 39428929. The next prime is 39428957. The reversal of 39428930 is 3982493.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10709 + ... + 13911.

It is an arithmetic number, because the mean of its divisors is an integer number (4440744).

Almost surely, 2^39428930 is an apocalyptic number.

39428930 is a deficient number, since it is larger than the sum of its proper divisors (31622974).

39428930 is a wasteful number, since it uses less digits than its factorization.

39428930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4441.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 39428930 is about 6279.2459738411. The cubic root of 39428930 is about 340.3598554427.

The spelling of 39428930 in words is "thirty-nine million, four hundred twenty-eight thousand, nine hundred thirty".