49472909 has 2 divisors, whose sum is σ = 49472910. Its totient is φ = 49472908.

The previous prime is 49472893. The next prime is 49472921. The reversal of 49472909 is 90927494.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46922500 + 2550409 = 6850^2 + 1597^2 .

It is a cyclic number.

It is not a de Polignac number, because 49472909 - 2⁴ = 49472893 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 49472909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49472209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24736454 + 24736455.

It is an arithmetic number, because the mean of its divisors is an integer number (24736455).

Almost surely, 2^49472909 is an apocalyptic number.

It is an amenable number.

49472909 is a deficient number, since it is larger than the sum of its proper divisors (1).

49472909 is an equidigital number, since it uses as much as digits as its factorization.

49472909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 49472909 is about 7033.6981027053. The cubic root of 49472909 is about 367.1040275107.

The spelling of 49472909 in words is "forty-nine million, four hundred seventy-two thousand, nine hundred nine".