39120505 has 8 divisors (see below), whose sum is σ = 47112192. Its totient is φ = 31184688.

The previous prime is 39120479. The next prime is 39120509. The reversal of 39120505 is 50502193.

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

It is a cyclic number.

It is not a de Polignac number, because 39120505 - 2¹³ = 39112313 is a prime.

It is a super-2 number, since 2×39120505² = 3060827822910050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39120505.

It is not an unprimeable number, because it can be changed into a prime (39120509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12409 + ... + 15238.

It is an arithmetic number, because the mean of its divisors is an integer number (5889024).

Almost surely, 2^39120505 is an apocalyptic number.

It is an amenable number.

39120505 is a deficient number, since it is larger than the sum of its proper divisors (7991687).

39120505 is a wasteful number, since it uses less digits than its factorization.

39120505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27935.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 39120505 is about 6254.6386786129. The cubic root of 39120505 is about 339.4700654602.

Adding to 39120505 its reverse (50502193), we get a palindrome (89622698).

The spelling of 39120505 in words is "thirty-nine million, one hundred twenty thousand, five hundred five".