75444490 has 16 divisors (see below), whose sum is σ = 148145760. Its totient is φ = 27434320.

The previous prime is 75444451. The next prime is 75444491. The reversal of 75444490 is 9444457.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (75444491) 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 7 ways as a sum of consecutive naturals, for example, 342820 + ... + 343039.

It is an arithmetic number, because the mean of its divisors is an integer number (9259110).

Almost surely, 2^75444490 is an apocalyptic number.

75444490 is a deficient number, since it is larger than the sum of its proper divisors (72701270).

75444490 is a wasteful number, since it uses less digits than its factorization.

75444490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685877.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 75444490 is about 8685.8787695892. The cubic root of 75444490 is about 422.5477975405.

The spelling of 75444490 in words is "seventy-five million, four hundred forty-four thousand, four hundred ninety".