472621949 has 2 divisors, whose sum is σ = 472621950. Its totient is φ = 472621948.

The previous prime is 472621909. The next prime is 472621969. The reversal of 472621949 is 949126274.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 468419449 + 4202500 = 21643^2 + 2050^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-472621949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (472621909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236310974 + 236310975.

It is an arithmetic number, because the mean of its divisors is an integer number (236310975).

Almost surely, 2^472621949 is an apocalyptic number.

It is an amenable number.

472621949 is a deficient number, since it is larger than the sum of its proper divisors (1).

472621949 is an equidigital number, since it uses as much as digits as its factorization.

472621949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 44.

The square root of 472621949 is about 21739.8700318102. The cubic root of 472621949 is about 778.9411168644.

The spelling of 472621949 in words is "four hundred seventy-two million, six hundred twenty-one thousand, nine hundred forty-nine".