971950389 has 4 divisors (see below), whose sum is σ = 1295933856. Its totient is φ = 647966924.

The previous prime is 971950381. The next prime is 971950423. The reversal of 971950389 is 983059179.

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 971950389 - 2³ = 971950381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971950381) 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, 161991729 + ... + 161991734.

It is an arithmetic number, because the mean of its divisors is an integer number (323983464).

Almost surely, 2^971950389 is an apocalyptic number.

It is an amenable number.

971950389 is a deficient number, since it is larger than the sum of its proper divisors (323983467).

971950389 is a wasteful number, since it uses less digits than its factorization.

971950389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323983466.

The product of its (nonzero) digits is 612360, while the sum is 51.

The square root of 971950389 is about 31176.1188893037. The cubic root of 971950389 is about 990.5613213042.

The spelling of 971950389 in words is "nine hundred seventy-one million, nine hundred fifty thousand, three hundred eighty-nine".