90938998 has 4 divisors (see below), whose sum is σ = 136408500. Its totient is φ = 45469498.

The previous prime is 90938989. The next prime is 90938999. The reversal of 90938998 is 89983909.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90938999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22734748 + ... + 22734751.

It is an arithmetic number, because the mean of its divisors is an integer number (34102125).

Almost surely, 2^90938998 is an apocalyptic number.

90938998 is a deficient number, since it is larger than the sum of its proper divisors (45469502).

90938998 is a wasteful number, since it uses less digits than its factorization.

90938998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45469501.

The product of its (nonzero) digits is 1259712, while the sum is 55.

The square root of 90938998 is about 9536.1941045681. The cubic root of 90938998 is about 449.6936153122.

The spelling of 90938998 in words is "ninety million, nine hundred thirty-eight thousand, nine hundred ninety-eight".