49021669 has 4 divisors (see below), whose sum is σ = 49078444. Its totient is φ = 48964896.

The previous prime is 49021627. The next prime is 49021673. The reversal of 49021669 is 96612094.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34869025 + 14152644 = 5905^2 + 3762^2 .

It is a cyclic number.

It is not a de Polignac number, because 49021669 - 2⁷ = 49021541 is a prime.

It is a super-2 number, since 2×49021669² = 4806248063091122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49021699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27072 + ... + 28825.

It is an arithmetic number, because the mean of its divisors is an integer number (12269611).

Almost surely, 2^49021669 is an apocalyptic number.

It is an amenable number.

49021669 is a deficient number, since it is larger than the sum of its proper divisors (56775).

49021669 is an equidigital number, since it uses as much as digits as its factorization.

49021669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56774.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 49021669 is about 7001.5476146349. The cubic root of 49021669 is about 365.9845042062.

The spelling of 49021669 in words is "forty-nine million, twenty-one thousand, six hundred sixty-nine".