72694949 has 4 divisors (see below), whose sum is σ = 72805920. Its totient is φ = 72583980.

The previous prime is 72694939. The next prime is 72694961. The reversal of 72694949 is 94949627.

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 a cyclic number.

It is not a de Polignac number, because 72694949 - 2¹² = 72690853 is a prime.

It is a super-2 number, since 2×72694949² = 10569111220225202, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72694897 and 72694906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72694939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54497 + ... + 55814.

It is an arithmetic number, because the mean of its divisors is an integer number (18201480).

Almost surely, 2^72694949 is an apocalyptic number.

It is an amenable number.

72694949 is a deficient number, since it is larger than the sum of its proper divisors (110971).

72694949 is a wasteful number, since it uses less digits than its factorization.

72694949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110970.

The product of its digits is 979776, while the sum is 50.

The square root of 72694949 is about 8526.1332971048. The cubic root of 72694949 is about 417.3509554399.

The spelling of 72694949 in words is "seventy-two million, six hundred ninety-four thousand, nine hundred forty-nine".