39494970 has 24 divisors (see below), whose sum is σ = 102687156. Its totient is φ = 10531968.

The previous prime is 39494963. The next prime is 39494981. The reversal of 39494970 is 7949493.

39494970 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 39200121 + 294849 = 6261^2 + 543^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 219327 + ... + 219506.

Almost surely, 2^39494970 is an apocalyptic number.

39494970 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

39494970 is an abundant number, since it is smaller than the sum of its proper divisors (63192186).

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

39494970 is a wasteful number, since it uses less digits than its factorization.

39494970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438846 (or 438843 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 39494970 is about 6284.5023669341. The cubic root of 39494970 is about 340.5497737532.

The spelling of 39494970 in words is "thirty-nine million, four hundred ninety-four thousand, nine hundred seventy".