90249238 has 8 divisors (see below), whose sum is σ = 135558288. Its totient is φ = 45063144.

The previous prime is 90249197. The next prime is 90249281. The reversal of 90249238 is 83294209.

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 = 90249197 and 90249206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28881 + ... + 31852.

It is an arithmetic number, because the mean of its divisors is an integer number (16944786).

Almost surely, 2^90249238 is an apocalyptic number.

90249238 is a deficient number, since it is larger than the sum of its proper divisors (45309050).

90249238 is a wasteful number, since it uses less digits than its factorization.

90249238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61478.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 90249238 is about 9499.9598946522. The cubic root of 90249238 is about 448.5537735044.

The spelling of 90249238 in words is "ninety million, two hundred forty-nine thousand, two hundred thirty-eight".