90064919 has 16 divisors (see below), whose sum is σ = 108185088. Its totient is φ = 73356192.

The previous prime is 90064913. The next prime is 90064927. The reversal of 90064919 is 91946009.

It is not a de Polignac number, because 90064919 - 2⁴ = 90064903 is a prime.

It is a super-2 number, since 2×90064919² = 16223379268953122, which contains 22 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 (90064913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7094 + ... + 15180.

It is an arithmetic number, because the mean of its divisors is an integer number (6761568).

Almost surely, 2^90064919 is an apocalyptic number.

90064919 is a deficient number, since it is larger than the sum of its proper divisors (18120169).

90064919 is a wasteful number, since it uses less digits than its factorization.

90064919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8174.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 90064919 is about 9490.2538954445. The cubic root of 90064919 is about 448.2481999860.

The spelling of 90064919 in words is "ninety million, sixty-four thousand, nine hundred nineteen".