49448389690 has 48 divisors (see below), whose sum is σ = 103924053000. Its totient is φ = 16890663552.

The previous prime is 49448389649. The next prime is 49448389741. The reversal of 49448389690 is 9698384494.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 21099596049 + 28348793641 = 145257^2 + 168371^2 .

It is a super-2 number, since 2×49448389690² (a number of 22 digits) contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 55765 + ... + 319384.

Almost surely, 2^49448389690 is an apocalyptic number.

49448389690 is an abundant number, since it is smaller than the sum of its proper divisors (54475663310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49448389690 is a wasteful number, since it uses less digits than its factorization.

49448389690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375439 (or 375432 counting only the distinct ones).

The product of its (nonzero) digits is 53747712, while the sum is 64.

The spelling of 49448389690 in words is "forty-nine billion, four hundred forty-eight million, three hundred eighty-nine thousand, six hundred ninety".