375653989 has 2 divisors, whose sum is σ = 375653990. Its totient is φ = 375653988.

The previous prime is 375653987. The next prime is 375654011. The reversal of 375653989 is 989356573.

It is a happy number.

375653989 is nontrivially palindromic in base 4.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 300744964 + 74909025 = 17342^2 + 8655^2 .

It is a cyclic number.

It is not a de Polignac number, because 375653989 - 2¹ = 375653987 is a prime.

It is a super-2 number, since 2×375653989² = 282231838903224242, which contains 22 as substring.

Together with 375653987, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (375653987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 187826994 + 187826995.

It is an arithmetic number, because the mean of its divisors is an integer number (187826995).

Almost surely, 2^375653989 is an apocalyptic number.

It is an amenable number.

375653989 is a deficient number, since it is larger than the sum of its proper divisors (1).

375653989 is an equidigital number, since it uses as much as digits as its factorization.

375653989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6123600, while the sum is 55.

The square root of 375653989 is about 19381.7952986817. The cubic root of 375653989 is about 721.5437485188.

The spelling of 375653989 in words is "three hundred seventy-five million, six hundred fifty-three thousand, nine hundred eighty-nine".