431399049 has 4 divisors (see below), whose sum is σ = 575198736. Its totient is φ = 287599364.

The previous prime is 431399039. The next prime is 431399081. The reversal of 431399049 is 940993134.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 431399049 - 2⁷ = 431398921 is a prime.

It is a super-2 number, since 2×431399049² = 372210278956208802, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 431399049.

It is not an unprimeable number, because it can be changed into a prime (431399039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71899839 + ... + 71899844.

It is an arithmetic number, because the mean of its divisors is an integer number (143799684).

Almost surely, 2^431399049 is an apocalyptic number.

It is an amenable number.

431399049 is a deficient number, since it is larger than the sum of its proper divisors (143799687).

431399049 is a wasteful number, since it uses less digits than its factorization.

431399049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143799686.

The product of its (nonzero) digits is 104976, while the sum is 42.

The square root of 431399049 is about 20770.1480254716. The cubic root of 431399049 is about 755.6019344856.

The spelling of 431399049 in words is "four hundred thirty-one million, three hundred ninety-nine thousand, forty-nine".