49001990 has 16 divisors (see below), whose sum is σ = 93392352. Its totient is φ = 18447744.

The previous prime is 49001903. The next prime is 49002049. The reversal of 49001990 is 9910094.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143954 + ... + 144293.

It is an arithmetic number, because the mean of its divisors is an integer number (5837022).

Almost surely, 2^49001990 is an apocalyptic number.

49001990 is a deficient number, since it is larger than the sum of its proper divisors (44390362).

49001990 is a wasteful number, since it uses less digits than its factorization.

49001990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288271.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 49001990 is about 7000.1421414140. The cubic root of 49001990 is about 365.9355246892.

The spelling of 49001990 in words is "forty-nine million, one thousand, nine hundred ninety".