9971432 has 8 divisors (see below), whose sum is σ = 18696450. Its totient is φ = 4985712.

The previous prime is 9971417. The next prime is 9971441. The reversal of 9971432 is 2341799.

It can be written as a sum of positive squares in only one way, i.e., 9947716 + 23716 = 3154^2 + 154^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×9971432² = 198858912261248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9971392 and 9971401.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623207 + ... + 623222.

Almost surely, 2^9971432 is an apocalyptic number.

It is an amenable number.

9971432 is a deficient number, since it is larger than the sum of its proper divisors (8725018).

9971432 is a wasteful number, since it uses less digits than its factorization.

9971432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246435 (or 1246431 counting only the distinct ones).

The product of its digits is 13608, while the sum is 35.

The square root of 9971432 is about 3157.7574321027. The cubic root of 9971432 is about 215.2381136918.

The spelling of 9971432 in words is "nine million, nine hundred seventy-one thousand, four hundred thirty-two".