39509950 has 12 divisors (see below), whose sum is σ = 73488600. Its totient is φ = 15803960.

The previous prime is 39509933. The next prime is 39509957. The reversal of 39509950 is 5990593.

It is a happy number.

It is a super-2 number, since 2×39509950² = 3122072298005000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39509957) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 395050 + ... + 395149.

It is an arithmetic number, because the mean of its divisors is an integer number (6124050).

Almost surely, 2^39509950 is an apocalyptic number.

39509950 is a deficient number, since it is larger than the sum of its proper divisors (33978650).

39509950 is a wasteful number, since it uses less digits than its factorization.

39509950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790211 (or 790206 counting only the distinct ones).

The product of its (nonzero) digits is 54675, while the sum is 40.

The square root of 39509950 is about 6285.6940746428. The cubic root of 39509950 is about 340.5928238832.

The spelling of 39509950 in words is "thirty-nine million, five hundred nine thousand, nine hundred fifty".