90127790 has 16 divisors (see below), whose sum is σ = 162550800. Its totient is φ = 35979840.

The previous prime is 90127787. The next prime is 90127813. The reversal of 90127790 is 9772109.

It is a self number, because there is not a number n which added to its sum of digits gives 90127790.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3440 + ... + 13859.

It is an arithmetic number, because the mean of its divisors is an integer number (10159425).

Almost surely, 2^90127790 is an apocalyptic number.

90127790 is a deficient number, since it is larger than the sum of its proper divisors (72423010).

90127790 is a wasteful number, since it uses less digits than its factorization.

90127790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17827.

The product of its (nonzero) digits is 7938, while the sum is 35.

The square root of 90127790 is about 9493.5657157888. The cubic root of 90127790 is about 448.3524775740.

Adding to 90127790 its reverse (9772109), we get a palindrome (99899899).

The spelling of 90127790 in words is "ninety million, one hundred twenty-seven thousand, seven hundred ninety".