1972463439 has 8 divisors (see below), whose sum is σ = 2634675120. Its totient is φ = 1312613696.

The previous prime is 1972463419. The next prime is 1972463447. The reversal of 1972463439 is 9343642791.

It is a happy number.

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-1972463439 is a prime.

It is a super-2 number, since 2×1972463439² = 7781224036383413442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1972463419) 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, 588534 + ... + 591875.

It is an arithmetic number, because the mean of its divisors is an integer number (329334390).

Almost surely, 2^1972463439 is an apocalyptic number.

1972463439 is a deficient number, since it is larger than the sum of its proper divisors (662211681).

1972463439 is a wasteful number, since it uses less digits than its factorization.

1972463439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180969.

The product of its digits is 979776, while the sum is 48.

The square root of 1972463439 is about 44412.4243765188. The cubic root of 1972463439 is about 1254.1119920380. Note that the first 3 decimals are identical.

The spelling of 1972463439 in words is "one billion, nine hundred seventy-two million, four hundred sixty-three thousand, four hundred thirty-nine".