1443920697 has 12 divisors (see below), whose sum is σ = 2152943104. Its totient is φ = 931561560.

The previous prime is 1443920669. The next prime is 1443920719. The reversal of 1443920697 is 7960293441.

It is a happy number.

1443920697 is a `hidden beast` number, since 1 + 4 + 439 + 206 + 9 + 7 = 666.

It is not a de Polignac number, because 1443920697 - 2¹¹ = 1443918649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1443920627) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2587393 + ... + 2587950.

Almost surely, 2^1443920697 is an apocalyptic number.

It is an amenable number.

1443920697 is a deficient number, since it is larger than the sum of its proper divisors (709022407).

1443920697 is a wasteful number, since it uses less digits than its factorization.

1443920697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5175380 (or 5175377 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 1443920697 is about 37998.9565251468. The cubic root of 1443920697 is about 1130.2671717963.

The spelling of 1443920697 in words is "one billion, four hundred forty-three million, nine hundred twenty thousand, six hundred ninety-seven".