4945399390 has 32 divisors (see below), whose sum is σ = 8981461440. Its totient is φ = 1960510464.

The previous prime is 4945399367. The next prime is 4945399421. The reversal of 4945399390 is 939935494.

It is a super-2 number, since 2×4945399390² = 48913950253224744200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 585316 + ... + 593704.

It is an arithmetic number, because the mean of its divisors is an integer number (280670670).

Almost surely, 2^4945399390 is an apocalyptic number.

4945399390 is a deficient number, since it is larger than the sum of its proper divisors (4036062050).

4945399390 is a wasteful number, since it uses less digits than its factorization.

4945399390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8916.

The product of its (nonzero) digits is 4723920, while the sum is 55.

The square root of 4945399390 is about 70323.5336853887. The cubic root of 4945399390 is about 1703.7287692254.

The spelling of 4945399390 in words is "four billion, nine hundred forty-five million, three hundred ninety-nine thousand, three hundred ninety".