9972994 has 8 divisors (see below), whose sum is σ = 14986188. Its totient is φ = 4977600.

The previous prime is 9972973. The next prime is 9972997. The reversal of 9972994 is 4992799.

9972994 = T₂₅₇₇ + T₂₅₇₈ + T₂₅₇₉.

It can be written as a sum of positive squares in 2 ways, for example, as 7371225 + 2601769 = 2715^2 + 1613^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (9972997) 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, 2947 + ... + 5350.

Almost surely, 2^9972994 is an apocalyptic number.

9972994 is the 2579-th centered triangular number.

9972994 is a deficient number, since it is larger than the sum of its proper divisors (5013194).

9972994 is a wasteful number, since it uses less digits than its factorization.

9972994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8900.

The product of its digits is 367416, while the sum is 49.

The square root of 9972994 is about 3158.0047498381. The cubic root of 9972994 is about 215.2493519432.

The spelling of 9972994 in words is "nine million, nine hundred seventy-two thousand, nine hundred ninety-four".