90273737 has 4 divisors (see below), whose sum is σ = 90348420. Its totient is φ = 90199056.

The previous prime is 90273713. The next prime is 90273739. The reversal of 90273737 is 73737209.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78570496 + 11703241 = 8864^2 + 3421^2 .

It is a cyclic number.

It is not a de Polignac number, because 90273737 - 2¹⁶ = 90208201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90273737.

It is not an unprimeable number, because it can be changed into a prime (90273739) 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, 35498 + ... + 37955.

It is an arithmetic number, because the mean of its divisors is an integer number (22587105).

Almost surely, 2^90273737 is an apocalyptic number.

It is an amenable number.

90273737 is a deficient number, since it is larger than the sum of its proper divisors (74683).

90273737 is a wasteful number, since it uses less digits than its factorization.

90273737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74682.

The product of its (nonzero) digits is 55566, while the sum is 38.

The square root of 90273737 is about 9501.2492336534. The cubic root of 90273737 is about 448.5943578718.

The spelling of 90273737 in words is "ninety million, two hundred seventy-three thousand, seven hundred thirty-seven".