49665990 has 32 divisors (see below), whose sum is σ = 130035456. Its totient is φ = 12040160.

The previous prime is 49665983. The next prime is 49665997. The reversal of 49665990 is 9956694.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (49665983) and next prime (49665997).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49665997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74922 + ... + 75581.

It is an arithmetic number, because the mean of its divisors is an integer number (4063608).

Almost surely, 2^49665990 is an apocalyptic number.

49665990 is an abundant number, since it is smaller than the sum of its proper divisors (80369466).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49665990 is a wasteful number, since it uses less digits than its factorization.

49665990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150524.

The product of its (nonzero) digits is 524880, while the sum is 48.

The square root of 49665990 is about 7047.4101626058. The cubic root of 49665990 is about 367.5809808121.

The spelling of 49665990 in words is "forty-nine million, six hundred sixty-five thousand, nine hundred ninety".