49669399 has 8 divisors (see below), whose sum is σ = 54244512. Its totient is φ = 45202080.

The previous prime is 49669379. The next prime is 49669453. The reversal of 49669399 is 99396694.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 49669399 - 2¹⁷ = 49538327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49669349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25984 + ... + 27829.

It is an arithmetic number, because the mean of its divisors is an integer number (6780564).

Almost surely, 2^49669399 is an apocalyptic number.

49669399 is a deficient number, since it is larger than the sum of its proper divisors (4575113).

49669399 is a wasteful number, since it uses less digits than its factorization.

49669399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53897.

The product of its digits is 2834352, while the sum is 55.

The square root of 49669399 is about 7047.6520203540. The cubic root of 49669399 is about 367.5893906910.

It can be divided in two parts, 4966 and 9399, that added together give a triangular number (14365 = T₁₆₉).

The spelling of 49669399 in words is "forty-nine million, six hundred sixty-nine thousand, three hundred ninety-nine".