753478906 has 4 divisors (see below), whose sum is σ = 1130218362. Its totient is φ = 376739452.

The previous prime is 753478883. The next prime is 753478907. The reversal of 753478906 is 609874357.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 471541225 + 281937681 = 21715^2 + 16791^2 .

It is a super-3 number, since 3×753478906³ (a number of 28 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 753478906.

It is not an unprimeable number, because it can be changed into a prime (753478907) 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 as a sum of consecutive naturals, namely, 188369725 + ... + 188369728.

Almost surely, 2^753478906 is an apocalyptic number.

753478906 is a deficient number, since it is larger than the sum of its proper divisors (376739456).

753478906 is a wasteful number, since it uses less digits than its factorization.

753478906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376739455.

The product of its (nonzero) digits is 1270080, while the sum is 49.

The square root of 753478906 is about 27449.5702334299. The cubic root of 753478906 is about 909.9629280876.

The spelling of 753478906 in words is "seven hundred fifty-three million, four hundred seventy-eight thousand, nine hundred six".