49779469 has 4 divisors (see below), whose sum is σ = 49798300. Its totient is φ = 49760640.

The previous prime is 49779437. The next prime is 49779497. The reversal of 49779469 is 96497794.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96497794 = 2 ⋅48248897.

It can be written as a sum of positive squares in 2 ways, for example, as 5822569 + 43956900 = 2413^2 + 6630^2 .

It is a cyclic number.

It is not a de Polignac number, because 49779469 - 2⁵ = 49779437 is a prime.

It is a super-5 number, since 5×49779469⁵ (a number of 40 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49779269) 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, 4644 + ... + 11005.

It is an arithmetic number, because the mean of its divisors is an integer number (12449575).

Almost surely, 2^49779469 is an apocalyptic number.

It is an amenable number.

49779469 is a deficient number, since it is larger than the sum of its proper divisors (18831).

49779469 is a wasteful number, since it uses less digits than its factorization.

49779469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18830.

The product of its digits is 3429216, while the sum is 55.

The square root of 49779469 is about 7055.4566825968. The cubic root of 49779469 is about 367.8607228339.

The spelling of 49779469 in words is "forty-nine million, seven hundred seventy-nine thousand, four hundred sixty-nine".