49135890 has 16 divisors (see below), whose sum is σ = 117926208. Its totient is φ = 13102896.

The previous prime is 49135883. The next prime is 49135897. The reversal of 49135890 is 9853194.

It is an interprime number because it is at equal distance from previous prime (49135883) and next prime (49135897).

It is not an unprimeable number, because it can be changed into a prime (49135897) 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, 818902 + ... + 818961.

It is an arithmetic number, because the mean of its divisors is an integer number (7370388).

Almost surely, 2^49135890 is an apocalyptic number.

49135890 is an abundant number, since it is smaller than the sum of its proper divisors (68790318).

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

49135890 is a wasteful number, since it uses less digits than its factorization.

49135890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1637873.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 49135890 is about 7009.6997082614. The cubic root of 49135890 is about 366.2685329608.

The spelling of 49135890 in words is "forty-nine million, one hundred thirty-five thousand, eight hundred ninety".