439948362669 has 4 divisors (see below), whose sum is σ = 586597816896. Its totient is φ = 293298908444.

The previous prime is 439948362647. The next prime is 439948362697. The reversal of 439948362669 is 966263849934.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 439948362669 - 2⁷ = 439948362541 is a prime.

It is a super-2 number, since 2×439948362669² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439948362169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73324727109 + ... + 73324727114.

It is an arithmetic number, because the mean of its divisors is an integer number (146649454224).

Almost surely, 2^439948362669 is an apocalyptic number.

It is an amenable number.

439948362669 is a deficient number, since it is larger than the sum of its proper divisors (146649454227).

439948362669 is a wasteful number, since it uses less digits than its factorization.

439948362669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146649454226.

The product of its digits is 362797056, while the sum is 69.

The spelling of 439948362669 in words is "four hundred thirty-nine billion, nine hundred forty-eight million, three hundred sixty-two thousand, six hundred sixty-nine".