49078009 has 2 divisors, whose sum is σ = 49078010. Its totient is φ = 49078008.

The previous prime is 49077979. The next prime is 49078049. The reversal of 49078009 is 90087094.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48608784 + 469225 = 6972^2 + 685^2 .

It is a cyclic number.

It is not a de Polignac number, because 49078009 - 2²³ = 40689401 is a prime.

It is not a weakly prime, because it can be changed into another prime (49078049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24539004 + 24539005.

It is an arithmetic number, because the mean of its divisors is an integer number (24539005).

Almost surely, 2^49078009 is an apocalyptic number.

It is an amenable number.

49078009 is a deficient number, since it is larger than the sum of its proper divisors (1).

49078009 is an equidigital number, since it uses as much as digits as its factorization.

49078009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 49078009 is about 7005.5698554793. The cubic root of 49078009 is about 366.1246576877.

The spelling of 49078009 in words is "forty-nine million, seventy-eight thousand, nine".