49909389 has 4 divisors (see below), whose sum is σ = 66545856. Its totient is φ = 33272924.

The previous prime is 49909381. The next prime is 49909393. The reversal of 49909389 is 98390994.

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 not a de Polignac number, because 49909389 - 2³ = 49909381 is a prime.

It is a super-2 number, since 2×49909389² = 4981894220706642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49909381) 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, 8318229 + ... + 8318234.

It is an arithmetic number, because the mean of its divisors is an integer number (16636464).

Almost surely, 2^49909389 is an apocalyptic number.

It is an amenable number.

49909389 is a deficient number, since it is larger than the sum of its proper divisors (16636467).

49909389 is a wasteful number, since it uses less digits than its factorization.

49909389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16636466.

The product of its (nonzero) digits is 629856, while the sum is 51.

The square root of 49909389 is about 7064.6577411790. The cubic root of 49909389 is about 368.1804727778.

The spelling of 49909389 in words is "forty-nine million, nine hundred nine thousand, three hundred eighty-nine".