90969673 has 4 divisors (see below), whose sum is σ = 92251008. Its totient is φ = 89688340.

The previous prime is 90969661. The next prime is 90969689. The reversal of 90969673 is 37696909.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90969673 - 2⁹ = 90969161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90969653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 640561 + ... + 640702.

It is an arithmetic number, because the mean of its divisors is an integer number (23062752).

Almost surely, 2^90969673 is an apocalyptic number.

It is an amenable number.

90969673 is a deficient number, since it is larger than the sum of its proper divisors (1281335).

90969673 is a wasteful number, since it uses less digits than its factorization.

90969673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281334.

The product of its (nonzero) digits is 551124, while the sum is 49.

The square root of 90969673 is about 9537.8023149990. The cubic root of 90969673 is about 449.7441722834.

It can be divided in two parts, 9096 and 9673, that added together give a square (18769 = 137²).

The spelling of 90969673 in words is "ninety million, nine hundred sixty-nine thousand, six hundred seventy-three".