49021819 has 24 divisors (see below), whose sum is σ = 63601664. Its totient is φ = 36946800.

The previous prime is 49021811. The next prime is 49021871. The reversal of 49021819 is 91812094.

It is not a de Polignac number, because 49021819 - 2³ = 49021811 is a prime.

It is a super-2 number, since 2×49021819² = 4806277476137522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (49021811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25324 + ... + 27190.

Almost surely, 2^49021819 is an apocalyptic number.

49021819 is a deficient number, since it is larger than the sum of its proper divisors (14579845).

49021819 is a wasteful number, since it uses less digits than its factorization.

49021819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1927 (or 1916 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 49021819 is about 7001.5583265442. The cubic root of 49021819 is about 365.9848774944.

The spelling of 49021819 in words is "forty-nine million, twenty-one thousand, eight hundred nineteen".