49386838490929 has 3 divisors (see below), whose sum is σ = 49386845518507. Its totient is φ = 49386831463352.

The previous prime is 49386838490887. The next prime is 49386838490947. The reversal of 49386838490929 is 92909483868394.

The square root of 49386838490929 is 7027577.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 10218667122225 + 39168171368704 = 3196665^2 + 6258448^2 .

It is not a de Polignac number, because 49386838490929 - 2²³ = 49386830102321 is a prime.

It is a super-2 number, since 2×49386838490929² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49386838490999) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3513789 + ... + 10541365.

Almost surely, 2^{49386838490929} is an apocalyptic number.

49386838490929 is the 7027577-th square number.

49386838490929 is the 3513789-th centered octagonal number.

It is an amenable number.

49386838490929 is a deficient number, since it is larger than the sum of its proper divisors (7027578).

49386838490929 is an frugal number, since it uses more digits than its factorization.

49386838490929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14055154 (or 7027577 counting only the distinct ones).

The product of its (nonzero) digits is 5804752896, while the sum is 82.

The spelling of 49386838490929 in words is "forty-nine trillion, three hundred eighty-six billion, eight hundred thirty-eight million, four hundred ninety thousand, nine hundred twenty-nine".