1406143439 has 8 divisors (see below), whose sum is σ = 1415314560. Its totient is φ = 1397001816.

The previous prime is 1406143399. The next prime is 1406143441. The reversal of 1406143439 is 9343416041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1406143439 is a prime.

It is a super-5 number, since 5×1406143439⁵ (a number of 47 digits) contains 55555 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1406143399 and 1406143408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1406143489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92624 + ... + 106730.

It is an arithmetic number, because the mean of its divisors is an integer number (176914320).

Almost surely, 2^1406143439 is an apocalyptic number.

1406143439 is a deficient number, since it is larger than the sum of its proper divisors (9171121).

1406143439 is a wasteful number, since it uses less digits than its factorization.

1406143439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14749.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 1406143439 is about 37498.5791597495. The cubic root of 1406143439 is about 1120.3228870817.

The spelling of 1406143439 in words is "one billion, four hundred six million, one hundred forty-three thousand, four hundred thirty-nine".