90936445 has 16 divisors (see below), whose sum is σ = 111587328. Its totient is φ = 71124480.

The previous prime is 90936409. The next prime is 90936449. The reversal of 90936445 is 54463909.

It is not a de Polignac number, because 90936445 - 2¹¹ = 90934397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90936398 and 90936407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90936449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44077 + ... + 46093.

It is an arithmetic number, because the mean of its divisors is an integer number (6974208).

Almost surely, 2^90936445 is an apocalyptic number.

It is an amenable number.

90936445 is a deficient number, since it is larger than the sum of its proper divisors (20650883).

90936445 is a wasteful number, since it uses less digits than its factorization.

90936445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 90936445 is about 9536.0602451956. The cubic root of 90936445 is about 449.6894070752.

The spelling of 90936445 in words is "ninety million, nine hundred thirty-six thousand, four hundred forty-five".