90858002 has 4 divisors (see below), whose sum is σ = 136287006. Its totient is φ = 45429000.

The previous prime is 90857983. The next prime is 90858007. The reversal of 90858002 is 20085809.

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

It can be written as a sum of positive squares in only one way, i.e., 90421081 + 436921 = 9509^2 + 661^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 90858002.

It is not an unprimeable number, because it can be changed into a prime (90858007) by changing a digit.

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 as a sum of consecutive naturals, namely, 22714499 + ... + 22714502.

Almost surely, 2^90858002 is an apocalyptic number.

90858002 is a deficient number, since it is larger than the sum of its proper divisors (45429004).

90858002 is a wasteful number, since it uses less digits than its factorization.

90858002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45429003.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 90858002 is about 9531.9463909529. The cubic root of 90858002 is about 449.5600671686.

The spelling of 90858002 in words is "ninety million, eight hundred fifty-eight thousand, two".