979749199 has 16 divisors (see below), whose sum is σ = 1157423904. Its totient is φ = 817603200.

The previous prime is 979749163. The next prime is 979749227. The reversal of 979749199 is 991947979.

It is a cyclic number.

It is not a de Polignac number, because 979749199 - 2¹⁵ = 979716431 is a prime.

It is a super-2 number, since 2×979749199² = 1919816985882283202, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 979749199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979749119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6957 + ... + 44809.

It is an arithmetic number, because the mean of its divisors is an integer number (72338994).

Almost surely, 2^979749199 is an apocalyptic number.

979749199 is a deficient number, since it is larger than the sum of its proper divisors (177674705).

979749199 is a wasteful number, since it uses less digits than its factorization.

979749199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38058.

The product of its digits is 11573604, while the sum is 64.

The square root of 979749199 is about 31300.9456566411. The cubic root of 979749199 is about 993.2036472312.

It can be divided in two parts, 9797 and 49199, that added together give a triangular number (58996 = T₃₄₃).

The spelling of 979749199 in words is "nine hundred seventy-nine million, seven hundred forty-nine thousand, one hundred ninety-nine".