143916946 has 4 divisors (see below), whose sum is σ = 215875422. Its totient is φ = 71958472.

The previous prime is 143916869. The next prime is 143916953. The reversal of 143916946 is 649619341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 649619341 = 7 ⋅92802763.

It can be written as a sum of positive squares in only one way, i.e., 122655625 + 21261321 = 11075^2 + 4611^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35979235 + ... + 35979238.

Almost surely, 2^143916946 is an apocalyptic number.

143916946 is a deficient number, since it is larger than the sum of its proper divisors (71958476).

143916946 is an equidigital number, since it uses as much as digits as its factorization.

143916946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71958475.

The product of its digits is 139968, while the sum is 43.

The square root of 143916946 is about 11996.5389175378. The cubic root of 143916946 is about 524.0474895289.

The spelling of 143916946 in words is "one hundred forty-three million, nine hundred sixteen thousand, nine hundred forty-six".