143396649 has 40 divisors (see below), whose sum is σ = 247455648. Its totient is φ = 81786240.

The previous prime is 143396633. The next prime is 143396653. The reversal of 143396649 is 946693341.

It is not a de Polignac number, because 143396649 - 2⁴ = 143396633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (143396689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 10414 + ... + 19880.

Almost surely, 2^143396649 is an apocalyptic number.

It is an amenable number.

143396649 is a deficient number, since it is larger than the sum of its proper divisors (104058999).

143396649 is a wasteful number, since it uses less digits than its factorization.

143396649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9507 (or 9498 counting only the distinct ones).

The product of its digits is 419904, while the sum is 45.

The square root of 143396649 is about 11974.8339863232. The cubic root of 143396649 is about 523.4152045316.

The spelling of 143396649 in words is "one hundred forty-three million, three hundred ninety-six thousand, six hundred forty-nine".