49129489 has 4 divisors (see below), whose sum is σ = 49250020. Its totient is φ = 49008960.

The previous prime is 49129453. The next prime is 49129529. The reversal of 49129489 is 98492194.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41796225 + 7333264 = 6465^2 + 2708^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49129489 is a prime.

It is a super-2 number, since 2×49129489² = 4827413378802242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49129789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59652 + ... + 60469.

It is an arithmetic number, because the mean of its divisors is an integer number (12312505).

Almost surely, 2^49129489 is an apocalyptic number.

It is an amenable number.

49129489 is a deficient number, since it is larger than the sum of its proper divisors (120531).

49129489 is a wasteful number, since it uses less digits than its factorization.

49129489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120530.

The product of its digits is 186624, while the sum is 46.

The square root of 49129489 is about 7009.2431117775. The cubic root of 49129489 is about 366.2526275016.

The spelling of 49129489 in words is "forty-nine million, one hundred twenty-nine thousand, four hundred eighty-nine".