971329399 has 4 divisors (see below), whose sum is σ = 1013561136. Its totient is φ = 929097664.

The previous prime is 971329397. The next prime is 971329409. The reversal of 971329399 is 993923179.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 971329399 - 2¹ = 971329397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971329397) 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, 21115834 + ... + 21115879.

It is an arithmetic number, because the mean of its divisors is an integer number (253390284).

Almost surely, 2^971329399 is an apocalyptic number.

971329399 is a deficient number, since it is larger than the sum of its proper divisors (42231737).

971329399 is a wasteful number, since it uses less digits than its factorization.

971329399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42231736.

The product of its digits is 826686, while the sum is 52.

The square root of 971329399 is about 31166.1579120687. The cubic root of 971329399 is about 990.3503161155.

The spelling of 971329399 in words is "nine hundred seventy-one million, three hundred twenty-nine thousand, three hundred ninety-nine".