7939549490 has 8 divisors (see below), whose sum is σ = 14291189100. Its totient is φ = 3175819792.

The previous prime is 7939549477. The next prime is 7939549507. The reversal of 7939549490 is 949459397.

It can be written as a sum of positive squares in 2 ways, for example, as 7855808689 + 83740801 = 88633^2 + 9151^2 .

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

It is a super-2 number, since 2×7939549490² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 396977465 + ... + 396977484.

Almost surely, 2^7939549490 is an apocalyptic number.

7939549490 is a deficient number, since it is larger than the sum of its proper divisors (6351639610).

7939549490 is a wasteful number, since it uses less digits than its factorization.

7939549490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793954956.

The product of its (nonzero) digits is 11022480, while the sum is 59.

The square root of 7939549490 is about 89104.1496789010. The cubic root of 7939549490 is about 1994.9497155476.

The spelling of 7939549490 in words is "seven billion, nine hundred thirty-nine million, five hundred forty-nine thousand, four hundred ninety".