39445970 has 8 divisors (see below), whose sum is σ = 71002764. Its totient is φ = 15778384.

The previous prime is 39445963. The next prime is 39446009. The reversal of 39445970 is 7954493.

It can be written as a sum of positive squares in 2 ways, for example, as 36372961 + 3073009 = 6031^2 + 1753^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1972289 + ... + 1972308.

Almost surely, 2^39445970 is an apocalyptic number.

39445970 is a deficient number, since it is larger than the sum of its proper divisors (31556794).

39445970 is a wasteful number, since it uses less digits than its factorization.

39445970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3944604.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 39445970 is about 6280.6026780875. The cubic root of 39445970 is about 340.4088794855.

It can be divided in two parts, 394 and 45970, that added together give a palindrome (46364).

The spelling of 39445970 in words is "thirty-nine million, four hundred forty-five thousand, nine hundred seventy".