9977974 has 4 divisors (see below), whose sum is σ = 14966964. Its totient is φ = 4988986.

The previous prime is 9977971. The next prime is 9977977. The reversal of 9977974 is 4797799.

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

It is an interprime number because it is at equal distance from previous prime (9977971) and next prime (9977977).

It is a super-4 number, since 4×9977974⁴ (a number of 29 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9977971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2494492 + ... + 2494495.

It is an arithmetic number, because the mean of its divisors is an integer number (3741741).

Almost surely, 2^9977974 is an apocalyptic number.

9977974 is a deficient number, since it is larger than the sum of its proper divisors (4988990).

9977974 is a wasteful number, since it uses less digits than its factorization.

9977974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4988989.

The product of its digits is 1000188, while the sum is 52.

The square root of 9977974 is about 3158.7931239636. The cubic root of 9977974 is about 215.2851741312.

It can be divided in two parts, 997 and 7974, that multiplied together give a triangular number (7950078 = T₃₉₈₇).

The spelling of 9977974 in words is "nine million, nine hundred seventy-seven thousand, nine hundred seventy-four".