428160949 has 2 divisors, whose sum is σ = 428160950. Its totient is φ = 428160948.

The previous prime is 428160913. The next prime is 428160973. The reversal of 428160949 is 949061824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 418488849 + 9672100 = 20457^2 + 3110^2 .

It is a cyclic number.

It is not a de Polignac number, because 428160949 - 2²³ = 419772341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428160979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214080474 + 214080475.

It is an arithmetic number, because the mean of its divisors is an integer number (214080475).

Almost surely, 2^428160949 is an apocalyptic number.

It is an amenable number.

428160949 is a deficient number, since it is larger than the sum of its proper divisors (1).

428160949 is an equidigital number, since it uses as much as digits as its factorization.

428160949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 428160949 is about 20692.0503817287. The cubic root of 428160949 is about 753.7066575556.

The spelling of 428160949 in words is "four hundred twenty-eight million, one hundred sixty thousand, nine hundred forty-nine".