390736747969 has 4 divisors (see below), whose sum is σ = 393133906096. Its totient is φ = 388339589844.

The previous prime is 390736747937. The next prime is 390736748021. The reversal of 390736747969 is 969747637093.

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, and also an emirpimes, since its reverse is a distinct semiprime: 969747637093 = 83 ⋅11683706471.

It is a cyclic number.

It is not a de Polignac number, because 390736747969 - 2⁵ = 390736747937 is a prime.

It is a super-2 number, since 2×390736747969² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 390736747898 and 390736747907.

It is not an unprimeable number, because it can be changed into a prime (390736747909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1198578819 + ... + 1198579144.

It is an arithmetic number, because the mean of its divisors is an integer number (98283476524).

Almost surely, 2^390736747969 is an apocalyptic number.

It is an amenable number.

390736747969 is a deficient number, since it is larger than the sum of its proper divisors (2397158127).

390736747969 is a wasteful number, since it uses less digits than its factorization.

390736747969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2397158126.

The product of its (nonzero) digits is 324060912, while the sum is 70.

The spelling of 390736747969 in words is "three hundred ninety billion, seven hundred thirty-six million, seven hundred forty-seven thousand, nine hundred sixty-nine".