143401894409 has 4 divisors (see below), whose sum is σ = 143430770304. Its totient is φ = 143373018516.

The previous prime is 143401894399. The next prime is 143401894423. The reversal of 143401894409 is 904498104341.

It is a happy number.

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 143401894409 - 2¹⁶ = 143401828873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143401894459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14430497 + ... + 14440430.

It is an arithmetic number, because the mean of its divisors is an integer number (35857692576).

Almost surely, 2^143401894409 is an apocalyptic number.

It is an amenable number.

143401894409 is a deficient number, since it is larger than the sum of its proper divisors (28875895).

143401894409 is an equidigital number, since it uses as much as digits as its factorization.

143401894409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28875894.

The product of its (nonzero) digits is 497664, while the sum is 47.

The spelling of 143401894409 in words is "one hundred forty-three billion, four hundred one million, eight hundred ninety-four thousand, four hundred nine".