39684930 has 16 divisors (see below), whose sum is σ = 95243904. Its totient is φ = 10582640.

The previous prime is 39684923. The next prime is 39684943. The reversal of 39684930 is 3948693.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 661386 + ... + 661445.

It is an arithmetic number, because the mean of its divisors is an integer number (5952744).

Almost surely, 2^39684930 is an apocalyptic number.

39684930 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

39684930 is an abundant number, since it is smaller than the sum of its proper divisors (55558974).

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

39684930 is a wasteful number, since it uses less digits than its factorization.

39684930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322841.

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 39684930 is about 6299.5976061968. The cubic root of 39684930 is about 341.0948844867.

The spelling of 39684930 in words is "thirty-nine million, six hundred eighty-four thousand, nine hundred thirty".