90381874 has 16 divisors (see below), whose sum is σ = 148212000. Its totient is φ = 40995360.

The previous prime is 90381871. The next prime is 90381883. The reversal of 90381874 is 47818309.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (90381871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6862 + ... + 15094.

It is an arithmetic number, because the mean of its divisors is an integer number (9263250).

Almost surely, 2^90381874 is an apocalyptic number.

90381874 is a deficient number, since it is larger than the sum of its proper divisors (57830126).

90381874 is a wasteful number, since it uses less digits than its factorization.

90381874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8745.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 90381874 is about 9506.9382032282. The cubic root of 90381874 is about 448.7734069618.

The spelling of 90381874 in words is "ninety million, three hundred eighty-one thousand, eight hundred seventy-four".