49699659 has 4 divisors (see below), whose sum is σ = 66266216. Its totient is φ = 33133104.

The previous prime is 49699651. The next prime is 49699669. The reversal of 49699659 is 95699694.

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

It is not a de Polignac number, because 49699659 - 2³ = 49699651 is a prime.

It is a super-2 number, since 2×49699659² = 4940112209432562, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49699599 and 49699608.

It is not an unprimeable number, because it can be changed into a prime (49699651) 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, 8283274 + ... + 8283279.

It is an arithmetic number, because the mean of its divisors is an integer number (16566554).

Almost surely, 2^49699659 is an apocalyptic number.

49699659 is a deficient number, since it is larger than the sum of its proper divisors (16566557).

49699659 is a wasteful number, since it uses less digits than its factorization.

49699659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16566556.

The product of its digits is 4723920, while the sum is 57.

The square root of 49699659 is about 7049.7985077589. The cubic root of 49699659 is about 367.6640241480.

The spelling of 49699659 in words is "forty-nine million, six hundred ninety-nine thousand, six hundred fifty-nine".