49359990 has 64 divisors (see below), whose sum is σ = 122342400. Its totient is φ = 12739584.

The previous prime is 49359977. The next prime is 49359991. The reversal of 49359990 is 9995394.

It is a super-2 number, since 2×49359990² = 4872817225600200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49359991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 139654 + ... + 140006.

It is an arithmetic number, because the mean of its divisors is an integer number (1911600).

Almost surely, 2^49359990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49359990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61171200).

49359990 is an abundant number, since it is smaller than the sum of its proper divisors (72982410).

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

49359990 is a wasteful number, since it uses less digits than its factorization.

49359990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501.

The product of its (nonzero) digits is 393660, while the sum is 48.

The square root of 49359990 is about 7025.6665164239. Note that the first 3 decimals coincide. The cubic root of 49359990 is about 366.8245169759.

The spelling of 49359990 in words is "forty-nine million, three hundred fifty-nine thousand, nine hundred ninety".