49397321 has 4 divisors (see below), whose sum is σ = 51997200. Its totient is φ = 46797444.

The previous prime is 49397311. The next prime is 49397339. The reversal of 49397321 is 12379394.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12379394 = 2 ⋅6189697.

It is a cyclic number.

It is not a de Polignac number, because 49397321 - 2¹⁰ = 49396297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49397311) 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, 1299911 + ... + 1299948.

It is an arithmetic number, because the mean of its divisors is an integer number (12999300).

Almost surely, 2^49397321 is an apocalyptic number.

It is an amenable number.

49397321 is a deficient number, since it is larger than the sum of its proper divisors (2599879).

49397321 is a wasteful number, since it uses less digits than its factorization.

49397321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2599878.

The product of its digits is 40824, while the sum is 38.

The square root of 49397321 is about 7028.3227728954. The cubic root of 49397321 is about 366.9169702310.

The spelling of 49397321 in words is "forty-nine million, three hundred ninety-seven thousand, three hundred twenty-one".