909999950 has 12 divisors (see below), whose sum is σ = 1692600000. Its totient is φ = 363999960.

The previous prime is 909999949. The next prime is 909999989. The reversal of 909999950 is 59999909.

It is a self number, because there is not a number n which added to its sum of digits gives 909999950.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9099950 + ... + 9100049.

It is an arithmetic number, because the mean of its divisors is an integer number (141050000).

Almost surely, 2^909999950 is an apocalyptic number.

909999950 is a deficient number, since it is larger than the sum of its proper divisors (782600050).

909999950 is a wasteful number, since it uses less digits than its factorization.

909999950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18200011 (or 18200006 counting only the distinct ones).

The product of its (nonzero) digits is 2657205, while the sum is 59.

The square root of 909999950 is about 30166.2054292548. The cubic root of 909999950 is about 969.0520905951.

The spelling of 909999950 in words is "nine hundred nine million, nine hundred ninety-nine thousand, nine hundred fifty".