49339021 has 4 divisors (see below), whose sum is σ = 50014972. Its totient is φ = 48663072.

The previous prime is 49339009. The next prime is 49339027. The reversal of 49339021 is 12093394.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12093394 = 2 ⋅6046697.

It can be written as a sum of positive squares in 2 ways, for example, as 30969225 + 18369796 = 5565^2 + 4286^2 .

It is a cyclic number.

It is not a de Polignac number, because 49339021 - 2⁷ = 49338893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49339027) 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, 337866 + ... + 338011.

It is an arithmetic number, because the mean of its divisors is an integer number (12503743).

Almost surely, 2^49339021 is an apocalyptic number.

It is an amenable number.

49339021 is a deficient number, since it is larger than the sum of its proper divisors (675951).

49339021 is an equidigital number, since it uses as much as digits as its factorization.

49339021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675950.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 49339021 is about 7024.1740439713. The cubic root of 49339021 is about 366.7725650962.

The spelling of 49339021 in words is "forty-nine million, three hundred thirty-nine thousand, twenty-one".