39479505 has 32 divisors (see below), whose sum is σ = 69162240. Its totient is φ = 19111680.

The previous prime is 39479471. The next prime is 39479507. The reversal of 39479505 is 50597493.

It is not a de Polignac number, because 39479505 - 2⁶ = 39479441 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (39479507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10236 + ... + 13554.

It is an arithmetic number, because the mean of its divisors is an integer number (2161320).

Almost surely, 2^39479505 is an apocalyptic number.

It is an amenable number.

39479505 is a deficient number, since it is larger than the sum of its proper divisors (29682735).

39479505 is a wasteful number, since it uses less digits than its factorization.

39479505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3401.

The product of its (nonzero) digits is 170100, while the sum is 42.

The square root of 39479505 is about 6283.2718387795. The cubic root of 39479505 is about 340.5053183892.

The spelling of 39479505 in words is "thirty-nine million, four hundred seventy-nine thousand, five hundred five".