49690819 has 2 divisors, whose sum is σ = 49690820. Its totient is φ = 49690818.

The previous prime is 49690801. The next prime is 49690873. The reversal of 49690819 is 91809694.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49690819 - 2⁹ = 49690307 is a prime.

It is a super-2 number, since 2×49690819² = 4938354985781522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (49694819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24845409 + 24845410.

It is an arithmetic number, because the mean of its divisors is an integer number (24845410).

Almost surely, 2^49690819 is an apocalyptic number.

49690819 is a deficient number, since it is larger than the sum of its proper divisors (1).

49690819 is an equidigital number, since it uses as much as digits as its factorization.

49690819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 49690819 is about 7049.1715116033. The cubic root of 49690819 is about 367.6422242486.

The spelling of 49690819 in words is "forty-nine million, six hundred ninety thousand, eight hundred nineteen".