38994779 has 4 divisors (see below), whose sum is σ = 39112920. Its totient is φ = 38876640.

The previous prime is 38994773. The next prime is 38994793. The reversal of 38994779 is 97749983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97749983 = 17 ⋅5749999.

It is a cyclic number.

It is not a de Polignac number, because 38994779 - 2¹⁶ = 38929243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38994773) 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, 58574 + ... + 59235.

It is an arithmetic number, because the mean of its divisors is an integer number (9778230).

Almost surely, 2^38994779 is an apocalyptic number.

38994779 is a deficient number, since it is larger than the sum of its proper divisors (118141).

38994779 is a wasteful number, since it uses less digits than its factorization.

38994779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118140.

The product of its digits is 3429216, while the sum is 56.

The square root of 38994779 is about 6244.5799698619. The cubic root of 38994779 is about 339.1060107073.

The spelling of 38994779 in words is "thirty-eight million, nine hundred ninety-four thousand, seven hundred seventy-nine".