90674749 has 4 divisors (see below), whose sum is σ = 98917920. Its totient is φ = 82431580.

The previous prime is 90674747. The next prime is 90674791. The reversal of 90674749 is 94747609.

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 not a de Polignac number, because 90674749 - 2¹ = 90674747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90674699 and 90674708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90674743) 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, 4121569 + ... + 4121590.

It is an arithmetic number, because the mean of its divisors is an integer number (24729480).

Almost surely, 2^90674749 is an apocalyptic number.

It is an amenable number.

90674749 is a deficient number, since it is larger than the sum of its proper divisors (8243171).

90674749 is a wasteful number, since it uses less digits than its factorization.

90674749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8243170.

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 90674749 is about 9522.3289693226. The cubic root of 90674749 is about 449.2576220417.

The spelling of 90674749 in words is "ninety million, six hundred seventy-four thousand, seven hundred forty-nine".