90073049 has 4 divisors (see below), whose sum is σ = 98261520. Its totient is φ = 81884580.

The previous prime is 90073031. The next prime is 90073051. The reversal of 90073049 is 94037009.

It is a happy number.

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 90073049 - 2⁸ = 90072793 is a prime.

It is a super-2 number, since 2×90073049² = 16226308312312802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90073079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4094219 + ... + 4094240.

It is an arithmetic number, because the mean of its divisors is an integer number (24565380).

Almost surely, 2^90073049 is an apocalyptic number.

It is an amenable number.

90073049 is a deficient number, since it is larger than the sum of its proper divisors (8188471).

90073049 is a wasteful number, since it uses less digits than its factorization.

90073049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8188470.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 90073049 is about 9490.6822199460. The cubic root of 90073049 is about 448.2616871027.

The spelling of 90073049 in words is "ninety million, seventy-three thousand, forty-nine".