49896009 has 6 divisors (see below), whose sum is σ = 72072026. Its totient is φ = 33264000.

The previous prime is 49895983. The next prime is 49896047. The reversal of 49896009 is 90069894.

It can be written as a sum of positive squares in only one way, i.e., 37785609 + 12110400 = 6147^2 + 3480^2 .

It is not a de Polignac number, because 49896009 - 2⁸ = 49895753 is a prime.

It is a super-2 number, since 2×49896009² = 4979223428256162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49896079) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2771992 + ... + 2772009.

Almost surely, 2^49896009 is an apocalyptic number.

It is an amenable number.

49896009 is a deficient number, since it is larger than the sum of its proper divisors (22176017).

49896009 is a wasteful number, since it uses less digits than its factorization.

49896009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5544007 (or 5544004 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 49896009 is about 7063.7107103845. The cubic root of 49896009 is about 368.1475685146.

The spelling of 49896009 in words is "forty-nine million, eight hundred ninety-six thousand, nine".