39528979220 has 12 divisors (see below), whose sum is σ = 83010856404. Its totient is φ = 15811591680.

The previous prime is 39528979219. The next prime is 39528979351. The reversal of 39528979220 is 2297982593.

It can be written as a sum of positive squares in 2 ways, for example, as 8582540164 + 30946439056 = 92642^2 + 175916^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 988224461 + ... + 988224500.

It is an arithmetic number, because the mean of its divisors is an integer number (6917571367).

Almost surely, 2^39528979220 is an apocalyptic number.

It is an amenable number.

39528979220 is an abundant number, since it is smaller than the sum of its proper divisors (43481877184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39528979220 is a wasteful number, since it uses less digits than its factorization.

39528979220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1976448970 (or 1976448968 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 56.

The spelling of 39528979220 in words is "thirty-nine billion, five hundred twenty-eight million, nine hundred seventy-nine thousand, two hundred twenty".