39949329 has 16 divisors (see below), whose sum is σ = 60963840. Its totient is φ = 22794960.

The previous prime is 39949319. The next prime is 39949331. The reversal of 39949329 is 92394993.

It is a happy number.

It is not a de Polignac number, because 39949329 - 2¹³ = 39941137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39949309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25684 + ... + 27194.

It is an arithmetic number, because the mean of its divisors is an integer number (3810240).

Almost surely, 2^39949329 is an apocalyptic number.

It is an amenable number.

39949329 is a deficient number, since it is larger than the sum of its proper divisors (21014511).

39949329 is a wasteful number, since it uses less digits than its factorization.

39949329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2780.

The product of its digits is 472392, while the sum is 48.

The square root of 39949329 is about 6320.5481566079. The cubic root of 39949329 is about 341.8507179953.

The spelling of 39949329 in words is "thirty-nine million, nine hundred forty-nine thousand, three hundred twenty-nine".