143990774 has 4 divisors (see below), whose sum is σ = 215986164. Its totient is φ = 71995386.

The previous prime is 143990761. The next prime is 143990779. The reversal of 143990774 is 477099341.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143990779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35997692 + ... + 35997695.

It is an arithmetic number, because the mean of its divisors is an integer number (53996541).

Almost surely, 2^143990774 is an apocalyptic number.

143990774 is a deficient number, since it is larger than the sum of its proper divisors (71995390).

143990774 is an equidigital number, since it uses as much as digits as its factorization.

143990774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71995389.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 143990774 is about 11999.6155771758. The cubic root of 143990774 is about 524.1370846397.

The spelling of 143990774 in words is "one hundred forty-three million, nine hundred ninety thousand, seven hundred seventy-four".