49420897 has 2 divisors, whose sum is σ = 49420898. Its totient is φ = 49420896.

The previous prime is 49420879. The next prime is 49420909. The reversal of 49420897 is 79802494.

Together with previous prime (49420879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40653376 + 8767521 = 6376^2 + 2961^2 .

It is a cyclic number.

It is not a de Polignac number, because 49420897 - 2²³ = 41032289 is a prime.

It is a super-3 number, since 3×49420897³ (a number of 24 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (49420807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24710448 + 24710449.

It is an arithmetic number, because the mean of its divisors is an integer number (24710449).

Almost surely, 2^49420897 is an apocalyptic number.

It is an amenable number.

49420897 is a deficient number, since it is larger than the sum of its proper divisors (1).

49420897 is an equidigital number, since it uses as much as digits as its factorization.

49420897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 49420897 is about 7029.9997866287. Note that the first 3 decimals coincide. The cubic root of 49420897 is about 366.9753341158.

The spelling of 49420897 in words is "forty-nine million, four hundred twenty thousand, eight hundred ninety-seven".