39730090 has 8 divisors (see below), whose sum is σ = 71514180. Its totient is φ = 15892032.

The previous prime is 39730081. The next prime is 39730091. The reversal of 39730090 is 9003793.

It can be written as a sum of positive squares in 2 ways, for example, as 38900169 + 829921 = 6237^2 + 911^2 .

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 (39730091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1986495 + ... + 1986514.

Almost surely, 2^39730090 is an apocalyptic number.

39730090 is a deficient number, since it is larger than the sum of its proper divisors (31784090).

39730090 is a wasteful number, since it uses less digits than its factorization.

39730090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3973016.

The product of its (nonzero) digits is 5103, while the sum is 31.

The square root of 39730090 is about 6303.1809429843. The cubic root of 39730090 is about 341.2242199437.

The spelling of 39730090 in words is "thirty-nine million, seven hundred thirty thousand, ninety".