49744890 has 192 divisors, whose sum is σ = 153552672. Its totient is φ = 11059200.

The previous prime is 49744867. The next prime is 49744921. The reversal of 49744890 is 9844794.

It can be written as a sum of positive squares in 16 ways, for example, as 4626801 + 45118089 = 2151^2 + 6717^2 .

It is a super-2 number, since 2×49744890² = 4949108162224200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 815460 + ... + 815520.

Almost surely, 2^49744890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49744890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76776336).

49744890 is an abundant number, since it is smaller than the sum of its proper divisors (103807782).

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

49744890 is a wasteful number, since it uses less digits than its factorization.

49744890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 49744890 is about 7053.0057422350. The cubic root of 49744890 is about 367.7755257123.

The spelling of 49744890 in words is "forty-nine million, seven hundred forty-four thousand, eight hundred ninety".