49876989 has 4 divisors (see below), whose sum is σ = 66502656. Its totient is φ = 33251324.

The previous prime is 49876987. The next prime is 49876991. The reversal of 49876989 is 98967894.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (49876987) and next prime (49876991).

It is a cyclic number.

It is not a de Polignac number, because 49876989 - 2¹ = 49876987 is a prime.

It is a super-2 number, since 2×49876989² = 4975428063412242, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49876987) 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, 8312829 + ... + 8312834.

It is an arithmetic number, because the mean of its divisors is an integer number (16625664).

Almost surely, 2^49876989 is an apocalyptic number.

It is an amenable number.

49876989 is a deficient number, since it is larger than the sum of its proper divisors (16625667).

49876989 is a wasteful number, since it uses less digits than its factorization.

49876989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16625666.

The product of its digits is 7838208, while the sum is 60.

The square root of 49876989 is about 7062.3642641824. The cubic root of 49876989 is about 368.1007841671.

The spelling of 49876989 in words is "forty-nine million, eight hundred seventy-six thousand, nine hundred eighty-nine".