49012 has 6 divisors (see below), whose sum is σ = 85778. Its totient is φ = 24504.

The previous prime is 49009. The next prime is 49019. The reversal of 49012 is 21094.

It can be written as a sum of positive squares in only one way, i.e., 41616 + 7396 = 204^2 + 86^2 .

It is a super-2 number, since 2×49012² = 4804352288, which contains 22 as substring.

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6123 + ... + 6130.

2⁴⁹⁰¹² is an apocalyptic number.

It is an amenable number.

49012 is a deficient number, since it is larger than the sum of its proper divisors (36766).

49012 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 13 representation: 49012 = (19402)₁₃.

49012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12257 (or 12255 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 49012 is about 221.3865397896. The cubic root of 49012 is about 36.5960440447.

The spelling of 49012 in words is "forty-nine thousand, twelve".