235407649 has 9 divisors (see below), whose sum is σ = 240021747. Its totient is φ = 230881464.

The previous prime is 235407637. The next prime is 235407659. The reversal of 235407649 is 946704532.

It is a happy number.

The square root of 235407649 is 15343.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 219247249 + 16160400 = 14807^2 + 4020^2 .

It is not a de Polignac number, because 235407649 - 2⁵ = 235407617 is a prime.

It is a super-2 number, since 2×235407649² = 110833522415414402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (235407659) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1027867 + ... + 1028095.

It is an arithmetic number, because the mean of its divisors is an integer number (26669083).

Almost surely, 2^235407649 is an apocalyptic number.

235407649 is the 15343-rd square number.

235407649 is the 7672-nd centered octagonal number.

It is an amenable number.

235407649 is a deficient number, since it is larger than the sum of its proper divisors (4614098).

235407649 is an frugal number, since it uses more digits than its factorization.

235407649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592 (or 296 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 40.

The cubic root of 235407649 is about 617.4571964626.

The spelling of 235407649 in words is "two hundred thirty-five million, four hundred seven thousand, six hundred forty-nine".