49009000 has 32 divisors (see below), whose sum is σ = 114683400. Its totient is φ = 19603200.

The previous prime is 49008991. The next prime is 49009001. The reversal of 49009000 is 90094.

It can be written as a sum of positive squares in 4 ways, for example, as 1976836 + 47032164 = 1406^2 + 6858^2 .

It is not an unprimeable number, because it can be changed into a prime (49009001) 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, 23505 + ... + 25504.

Almost surely, 2^49009000 is an apocalyptic number.

49009000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49009000 is an abundant number, since it is smaller than the sum of its proper divisors (65674400).

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

49009000 is a wasteful number, since it uses less digits than its factorization.

49009000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49030 (or 49016 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 49009000 is about 7000.6428276266. The cubic root of 49009000 is about 365.9529735433.

Adding to 49009000 its reverse (90094), we get a palindrome (49099094).

The spelling of 49009000 in words is "forty-nine million, nine thousand".