90090950 has 12 divisors (see below), whose sum is σ = 167569260. Its totient is φ = 36036360.

The previous prime is 90090943. The next prime is 90090971. The reversal of 90090950 is 5909009.

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, 900860 + ... + 900959.

It is an arithmetic number, because the mean of its divisors is an integer number (13964105).

Almost surely, 2^90090950 is an apocalyptic number.

90090950 is a deficient number, since it is larger than the sum of its proper divisors (77478310).

90090950 is a wasteful number, since it uses less digits than its factorization.

90090950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801831 (or 1801826 counting only the distinct ones).

The product of its (nonzero) digits is 3645, while the sum is 32.

The square root of 90090950 is about 9491.6252559822. The cubic root of 90090950 is about 448.2913807829.

Adding to 90090950 its reverse (5909009), we get a palindrome (95999959).

The spelling of 90090950 in words is "ninety million, ninety thousand, nine hundred fifty".