979801949 has 4 divisors (see below), whose sum is σ = 1119773664. Its totient is φ = 839830236.

The previous prime is 979801939. The next prime is 979801951. The reversal of 979801949 is 949108979.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 979801949 - 2¹⁶ = 979736413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 979801894 and 979801903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979801939) 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, 69985847 + ... + 69985860.

It is an arithmetic number, because the mean of its divisors is an integer number (279943416).

Almost surely, 2^979801949 is an apocalyptic number.

It is an amenable number.

979801949 is a deficient number, since it is larger than the sum of its proper divisors (139971715).

979801949 is a wasteful number, since it uses less digits than its factorization.

979801949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139971714.

The product of its (nonzero) digits is 1469664, while the sum is 56.

The square root of 979801949 is about 31301.7882715988. The cubic root of 979801949 is about 993.2214717085.

The spelling of 979801949 in words is "nine hundred seventy-nine million, eight hundred one thousand, nine hundred forty-nine".