49091290 has 16 divisors (see below), whose sum is σ = 91215360. Its totient is φ = 19002960.

The previous prime is 49091249. The next prime is 49091293. The reversal of 49091290 is 9219094.

It is not an unprimeable number, because it can be changed into a prime (49091293) 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, 78870 + ... + 79489.

It is an arithmetic number, because the mean of its divisors is an integer number (5700960).

Almost surely, 2^49091290 is an apocalyptic number.

49091290 is a deficient number, since it is larger than the sum of its proper divisors (42124070).

49091290 is a wasteful number, since it uses less digits than its factorization.

49091290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158397.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 49091290 is about 7006.5176799891. The cubic root of 49091290 is about 366.1576803736.

The spelling of 49091290 in words is "forty-nine million, ninety-one thousand, two hundred ninety".