49943198397 has 4 divisors (see below), whose sum is σ = 66590931200. Its totient is φ = 33295465596.

The previous prime is 49943198387. The next prime is 49943198411. The reversal of 49943198397 is 79389134994.

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.

It is not a de Polignac number, because 49943198397 - 2⁸ = 49943198141 is a prime.

It is a super-2 number, since 2×49943198397² (a number of 22 digits) 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 (49943198317) 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, 8323866397 + ... + 8323866402.

It is an arithmetic number, because the mean of its divisors is an integer number (16647732800).

Almost surely, 2^49943198397 is an apocalyptic number.

It is an amenable number.

49943198397 is a deficient number, since it is larger than the sum of its proper divisors (16647732803).

49943198397 is a wasteful number, since it uses less digits than its factorization.

49943198397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16647732802.

The product of its digits is 52907904, while the sum is 66.

The spelling of 49943198397 in words is "forty-nine billion, nine hundred forty-three million, one hundred ninety-eight thousand, three hundred ninety-seven".