49897284129 has 81 divisors (see below), whose sum is σ = 92251225521. Its totient is φ = 25893861840.

The previous prime is 49897284109. The next prime is 49897284163. The reversal of 49897284129 is 92148279894.

The square root of 49897284129 is 223377.

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

It is not a de Polignac number, because 49897284129 - 2⁹ = 49897283617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (49897284109) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 51599604 + ... + 51600570.

Almost surely, 2^49897284129 is an apocalyptic number.

49897284129 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

49897284129 is the 223377-th square number.

49897284129 is the 111689-th centered octagonal number.

It is an amenable number.

49897284129 is a deficient number, since it is larger than the sum of its proper divisors (42353941392).

49897284129 is an equidigital number, since it uses as much as digits as its factorization.

49897284129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1976 (or 988 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 63.

The spelling of 49897284129 in words is "forty-nine billion, eight hundred ninety-seven million, two hundred eighty-four thousand, one hundred twenty-nine".