39964730 has 32 divisors (see below), whose sum is σ = 77961744. Its totient is φ = 14662656.

The previous prime is 39964643. The next prime is 39964747. The reversal of 39964730 is 3746993.

It can be written as a sum of positive squares in 8 ways, for example, as 19070689 + 20894041 = 4367^2 + 4571^2 .

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 15 ways as a sum of consecutive naturals, for example, 21602 + ... + 23378.

Almost surely, 2^39964730 is an apocalyptic number.

39964730 is a deficient number, since it is larger than the sum of its proper divisors (37997014).

39964730 is a wasteful number, since it uses less digits than its factorization.

39964730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1970.

The product of its (nonzero) digits is 122472, while the sum is 41.

The square root of 39964730 is about 6321.7663670844. The cubic root of 39964730 is about 341.8946416909.

The spelling of 39964730 in words is "thirty-nine million, nine hundred sixty-four thousand, seven hundred thirty".