49999969 has 4 divisors (see below), whose sum is σ = 50632960. Its totient is φ = 49366980.

The previous prime is 49999921. The next prime is 49999991. The reversal of 49999969 is 96999994.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49999969 is a prime.

It is a super-2 number, since 2×49999969² = 4999993800001922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49999969.

It is not an unprimeable number, because it can be changed into a prime (49999069) 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, 316377 + ... + 316534.

It is an arithmetic number, because the mean of its divisors is an integer number (12658240).

Almost surely, 2^49999969 is an apocalyptic number.

It is an amenable number.

49999969 is a deficient number, since it is larger than the sum of its proper divisors (632991).

49999969 is an equidigital number, since it uses as much as digits as its factorization.

49999969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632990.

The product of its digits is 12754584, while the sum is 64.

The square root of 49999969 is about 7071.0656198341. The cubic root of 49999969 is about 368.4030737274.

It can be divided in two parts, 4999996 and 9, that added together give a palindrome (5000005).

The spelling of 49999969 in words is "forty-nine million, nine hundred ninety-nine thousand, nine hundred sixty-nine".