71198949 has 4 divisors (see below), whose sum is σ = 94931936. Its totient is φ = 47465964.

The previous prime is 71198923. The next prime is 71198969. The reversal of 71198949 is 94989117.

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 71198949 - 2⁵ = 71198917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71198898 and 71198907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71198969) 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, 11866489 + ... + 11866494.

It is an arithmetic number, because the mean of its divisors is an integer number (23732984).

Almost surely, 2^71198949 is an apocalyptic number.

It is an amenable number.

71198949 is a deficient number, since it is larger than the sum of its proper divisors (23732987).

71198949 is a wasteful number, since it uses less digits than its factorization.

71198949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23732986.

The product of its digits is 163296, while the sum is 48.

The square root of 71198949 is about 8437.9469659390. The cubic root of 71198949 is about 414.4681802376.

The spelling of 71198949 in words is "seventy-one million, one hundred ninety-eight thousand, nine hundred forty-nine".