75440417 has 12 divisors (see below), whose sum is σ = 81943740. Its totient is φ = 69421248.

The previous prime is 75440401. The next prime is 75440423. The reversal of 75440417 is 71404457.

It can be written as a sum of positive squares in 6 ways, for example, as 80656 + 75359761 = 284^2 + 8681^2 .

It is not a de Polignac number, because 75440417 - 2⁴ = 75440401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75440117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85583 + ... + 86459.

It is an arithmetic number, because the mean of its divisors is an integer number (6828645).

Almost surely, 2^75440417 is an apocalyptic number.

It is an amenable number.

75440417 is a deficient number, since it is larger than the sum of its proper divisors (6503323).

75440417 is a wasteful number, since it uses less digits than its factorization.

75440417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412 (or 1399 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 32.

The square root of 75440417 is about 8685.6443054042. The cubic root of 75440417 is about 422.5401934148.

It can be divided in two parts, 75440 and 417, that added together give a palindrome (75857).

The spelling of 75440417 in words is "seventy-five million, four hundred forty thousand, four hundred seventeen".