431629749 has 16 divisors (see below), whose sum is σ = 640594240. Its totient is φ = 287238960.

The previous prime is 431629741. The next prime is 431629763. The reversal of 431629749 is 947926134.

It is a happy number.

431629749 is a `hidden beast` number, since 4 + 316 + 297 + 49 = 666.

It is not a de Polignac number, because 431629749 - 2³ = 431629741 is a prime.

It is a super-3 number, since 3×431629749³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431629741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1419 + ... + 29415.

It is an arithmetic number, because the mean of its divisors is an integer number (40037140).

Almost surely, 2^431629749 is an apocalyptic number.

It is an amenable number.

431629749 is a deficient number, since it is larger than the sum of its proper divisors (208964491).

431629749 is a wasteful number, since it uses less digits than its factorization.

431629749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28577 (or 28571 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 431629749 is about 20775.7009268039. The cubic root of 431629749 is about 755.7366019917.

The spelling of 431629749 in words is "four hundred thirty-one million, six hundred twenty-nine thousand, seven hundred forty-nine".