49969657 has 2 divisors, whose sum is σ = 49969658. Its totient is φ = 49969656.

The previous prime is 49969643. The next prime is 49969669. The reversal of 49969657 is 75696994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47485881 + 2483776 = 6891^2 + 1576^2 .

It is a cyclic number.

It is not a de Polignac number, because 49969657 - 2¹⁹ = 49445369 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 49969598 and 49969607.

It is not a weakly prime, because it can be changed into another prime (49969057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24984828 + 24984829.

It is an arithmetic number, because the mean of its divisors is an integer number (24984829).

Almost surely, 2^49969657 is an apocalyptic number.

It is an amenable number.

49969657 is a deficient number, since it is larger than the sum of its proper divisors (1).

49969657 is an equidigital number, since it uses as much as digits as its factorization.

49969657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3674160, while the sum is 55.

The square root of 49969657 is about 7068.9219121447. The cubic root of 49969657 is about 368.3286117388.

The spelling of 49969657 in words is "forty-nine million, nine hundred sixty-nine thousand, six hundred fifty-seven".