49866397 has 4 divisors (see below), whose sum is σ = 56990176. Its totient is φ = 42742620.

The previous prime is 49866379. The next prime is 49866407. The reversal of 49866397 is 79366894.

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: 79366894 = 2 ⋅39683447.

It is a cyclic number.

It is not a de Polignac number, because 49866397 - 2²³ = 41477789 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 (49866307) 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, 3561879 + ... + 3561892.

It is an arithmetic number, because the mean of its divisors is an integer number (14247544).

Almost surely, 2^49866397 is an apocalyptic number.

It is an amenable number.

49866397 is a deficient number, since it is larger than the sum of its proper divisors (7123779).

49866397 is an equidigital number, since it uses as much as digits as its factorization.

49866397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7123778.

The product of its digits is 1959552, while the sum is 52.

The square root of 49866397 is about 7061.6143338475. The cubic root of 49866397 is about 368.0747253933.

The spelling of 49866397 in words is "forty-nine million, eight hundred sixty-six thousand, three hundred ninety-seven".