457637989 has 2 divisors, whose sum is σ = 457637990. Its totient is φ = 457637988.

The previous prime is 457637963. The next prime is 457638017. The reversal of 457637989 is 989736754.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 431933089 + 25704900 = 20783^2 + 5070^2 .

It is a cyclic number.

It is not a de Polignac number, because 457637989 - 2¹³ = 457629797 is a prime.

It is a super-3 number, since 3×457637989³ (a number of 27 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (457637959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228818994 + 228818995.

It is an arithmetic number, because the mean of its divisors is an integer number (228818995).

Almost surely, 2^457637989 is an apocalyptic number.

It is an amenable number.

457637989 is a deficient number, since it is larger than the sum of its proper divisors (1).

457637989 is an equidigital number, since it uses as much as digits as its factorization.

457637989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11430720, while the sum is 58.

The square root of 457637989 is about 21392.4750554956. The cubic root of 457637989 is about 770.6207335102.

The spelling of 457637989 in words is "four hundred fifty-seven million, six hundred thirty-seven thousand, nine hundred eighty-nine".