68939401 has 4 divisors (see below), whose sum is σ = 69201792. Its totient is φ = 68677012.

The previous prime is 68939389. The next prime is 68939411. The reversal of 68939401 is 10493986.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10493986 = 2 ⋅5246993.

It is a cyclic number.

It is not a de Polignac number, because 68939401 - 2¹⁵ = 68906633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68939411) 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, 130801 + ... + 131326.

It is an arithmetic number, because the mean of its divisors is an integer number (17300448).

Almost surely, 2^68939401 is an apocalyptic number.

It is an amenable number.

68939401 is a deficient number, since it is larger than the sum of its proper divisors (262391).

68939401 is a wasteful number, since it uses less digits than its factorization.

68939401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262390.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 68939401 is about 8302.9754305309. The cubic root of 68939401 is about 410.0364849547.

The spelling of 68939401 in words is "sixty-eight million, nine hundred thirty-nine thousand, four hundred one".