39219970 has 8 divisors (see below), whose sum is σ = 70595964. Its totient is φ = 15687984.

The previous prime is 39219953. The next prime is 39219979. The reversal of 39219970 is 7991293.

It can be written as a sum of positive squares in 2 ways, for example, as 38925121 + 294849 = 6239^2 + 543^2 .

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

It is not an unprimeable number, because it can be changed into a prime (39219979) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1960989 + ... + 1961008.

Almost surely, 2^39219970 is an apocalyptic number.

39219970 is a deficient number, since it is larger than the sum of its proper divisors (31375994).

39219970 is a wasteful number, since it uses less digits than its factorization.

39219970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3922004.

The product of its (nonzero) digits is 30618, while the sum is 40.

The square root of 39219970 is about 6262.5849295638. The cubic root of 39219970 is about 339.7575260807.

The spelling of 39219970 in words is "thirty-nine million, two hundred nineteen thousand, nine hundred seventy".