90213938 has 8 divisors (see below), whose sum is σ = 142443120. Its totient is φ = 42732900.

The previous prime is 90213923. The next prime is 90213967. The reversal of 90213938 is 83931209.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 90213898 and 90213907.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1186988 + ... + 1187063.

It is an arithmetic number, because the mean of its divisors is an integer number (17805390).

Almost surely, 2^90213938 is an apocalyptic number.

90213938 is a deficient number, since it is larger than the sum of its proper divisors (52229182).

90213938 is a wasteful number, since it uses less digits than its factorization.

90213938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2374072.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 90213938 is about 9498.1018103619. The cubic root of 90213938 is about 448.4952835809.

The spelling of 90213938 in words is "ninety million, two hundred thirteen thousand, nine hundred thirty-eight".