958665947 has 4 divisors (see below), whose sum is σ = 962644056. Its totient is φ = 954687840.

The previous prime is 958665923. The next prime is 958665959. The reversal of 958665947 is 749566859.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 749566859 = 3361 ⋅223019.

It is a cyclic number.

It is not a de Polignac number, because 958665947 - 2¹⁰ = 958664923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (958665997) 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, 1988693 + ... + 1989174.

It is an arithmetic number, because the mean of its divisors is an integer number (240661014).

Almost surely, 2^958665947 is an apocalyptic number.

958665947 is a deficient number, since it is larger than the sum of its proper divisors (3978109).

958665947 is a wasteful number, since it uses less digits than its factorization.

958665947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3978108.

The product of its digits is 16329600, while the sum is 59.

The square root of 958665947 is about 30962.3310976419. The cubic root of 958665947 is about 986.0276654557.

The spelling of 958665947 in words is "nine hundred fifty-eight million, six hundred sixty-five thousand, nine hundred forty-seven".