7478449402 has 8 divisors (see below), whose sum is σ = 11705399136. Its totient is φ = 3576649692.

The previous prime is 7478449387. The next prime is 7478449403. The reversal of 7478449402 is 2049448747.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (7478449403) 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, 81287448 + ... + 81287539.

It is an arithmetic number, because the mean of its divisors is an integer number (1463174892).

Almost surely, 2^7478449402 is an apocalyptic number.

7478449402 is a deficient number, since it is larger than the sum of its proper divisors (4226949734).

7478449402 is a wasteful number, since it uses less digits than its factorization.

7478449402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162575012.

The product of its (nonzero) digits is 1806336, while the sum is 49.

The square root of 7478449402 is about 86478.0284349730. The cubic root of 7478449402 is about 1955.5571833447.

The spelling of 7478449402 in words is "seven billion, four hundred seventy-eight million, four hundred forty-nine thousand, four hundred two".