90854539394 has 4 divisors (see below), whose sum is σ = 136281809094. Its totient is φ = 45427269696.

The previous prime is 90854539343. The next prime is 90854539423. The reversal of 90854539394 is 49393545809.

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., 78307627225 + 12546912169 = 279835^2 + 112013^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22713634847 + ... + 22713634850.

Almost surely, 2^90854539394 is an apocalyptic number.

90854539394 is a deficient number, since it is larger than the sum of its proper divisors (45427269700).

90854539394 is a wasteful number, since it uses less digits than its factorization.

90854539394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45427269699.

The product of its (nonzero) digits is 20995200, while the sum is 59.

The spelling of 90854539394 in words is "ninety billion, eight hundred fifty-four million, five hundred thirty-nine thousand, three hundred ninety-four".