90943906 has 8 divisors (see below), whose sum is σ = 136541340. Its totient is φ = 45430128.

The previous prime is 90943889. The next prime is 90943933. The reversal of 90943906 is 60934909.

It can be written as a sum of positive squares in 2 ways, for example, as 78163281 + 12780625 = 8841^2 + 3575^2 .

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

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, 18121 + ... + 22588.

Almost surely, 2^90943906 is an apocalyptic number.

90943906 is a deficient number, since it is larger than the sum of its proper divisors (45597434).

90943906 is a wasteful number, since it uses less digits than its factorization.

90943906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41828.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 90943906 is about 9536.4514364621. The cubic root of 90943906 is about 449.7017051915.

The spelling of 90943906 in words is "ninety million, nine hundred forty-three thousand, nine hundred six".