90417749 has 8 divisors (see below), whose sum is σ = 91065912. Its totient is φ = 89772480.

The previous prime is 90417721. The next prime is 90417779. The reversal of 90417749 is 94771409.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 31281649 + 59136100 = 5593^2 + 7690^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 90417749 - 2⁸ = 90417493 is a prime.

It is a super-3 number, since 3×90417749³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90417709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122987 + ... + 123719.

It is an arithmetic number, because the mean of its divisors is an integer number (11383239).

Almost surely, 2^90417749 is an apocalyptic number.

It is an amenable number.

90417749 is a deficient number, since it is larger than the sum of its proper divisors (648163).

90417749 is a wasteful number, since it uses less digits than its factorization.

90417749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1447.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 90417749 is about 9508.8247959461. The cubic root of 90417749 is about 448.8327758581.

The spelling of 90417749 in words is "ninety million, four hundred seventeen thousand, seven hundred forty-nine".