961403971 has 32 divisors (see below), whose sum is σ = 1137438720. Its totient is φ = 803325600.

The previous prime is 961403959. The next prime is 961403983. The reversal of 961403971 is 179304169.

It is an interprime number because it is at equal distance from previous prime (961403959) and next prime (961403983).

It is not a de Polignac number, because 961403971 - 2¹¹ = 961401923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (961443971) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 993730 + ... + 994696.

It is an arithmetic number, because the mean of its divisors is an integer number (35544960).

Almost surely, 2^961403971 is an apocalyptic number.

961403971 is a deficient number, since it is larger than the sum of its proper divisors (176034749).

961403971 is a wasteful number, since it uses less digits than its factorization.

961403971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 961403971 is about 31006.5149766948. The cubic root of 961403971 is about 986.9654969090.

The spelling of 961403971 in words is "nine hundred sixty-one million, four hundred three thousand, nine hundred seventy-one".