1349999431 has 8 divisors (see below), whose sum is σ = 1487309328. Its totient is φ = 1215120000.

The previous prime is 1349999429. The next prime is 1349999447.

It is a happy number.

1349999431 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1349999431 - 2¹ = 1349999429 is a prime.

It is a super-2 number, since 2×1349999431² = 3644996927400647522, which contains 22 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 (1349999531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 606450 + ... + 608671.

It is an arithmetic number, because the mean of its divisors is an integer number (185913666).

Almost surely, 2^1349999431 is an apocalyptic number.

1349999431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1349999431 is a deficient number, since it is larger than the sum of its proper divisors (137309897).

1349999431 is a wasteful number, since it uses less digits than its factorization.

1349999431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215233.

The product of its digits is 944784, while the sum is 52.

The square root of 1349999431 is about 36742.3383986376. The cubic root of 1349999431 is about 1105.2092943170.

The spelling of 1349999431 in words is "one billion, three hundred forty-nine million, nine hundred ninety-nine thousand, four hundred thirty-one".