971400238 has 4 divisors (see below), whose sum is σ = 1457100360. Its totient is φ = 485700118.

The previous prime is 971400233. The next prime is 971400259. The reversal of 971400238 is 832004179.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971400233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 242850058 + ... + 242850061.

It is an arithmetic number, because the mean of its divisors is an integer number (364275090).

Almost surely, 2^971400238 is an apocalyptic number.

971400238 is a deficient number, since it is larger than the sum of its proper divisors (485700122).

971400238 is a wasteful number, since it uses less digits than its factorization.

971400238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485700121.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 971400238 is about 31167.2943644456. The cubic root of 971400238 is about 990.3743909284.

The spelling of 971400238 in words is "nine hundred seventy-one million, four hundred thousand, two hundred thirty-eight".