39421427 has 4 divisors (see below), whose sum is σ = 39548496. Its totient is φ = 39294360.

The previous prime is 39421399. The next prime is 39421439. The reversal of 39421427 is 72412493.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72412493 = 191 ⋅379123.

It is a cyclic number.

It is not a de Polignac number, because 39421427 - 2⁶ = 39421363 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39421393 and 39421402.

It is not an unprimeable number, because it can be changed into a prime (39421477) 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, 63068 + ... + 63689.

It is an arithmetic number, because the mean of its divisors is an integer number (9887124).

Almost surely, 2^39421427 is an apocalyptic number.

39421427 is a deficient number, since it is larger than the sum of its proper divisors (127069).

39421427 is a wasteful number, since it uses less digits than its factorization.

39421427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127068.

The product of its digits is 12096, while the sum is 32.

The square root of 39421427 is about 6278.6485010709. The cubic root of 39421427 is about 340.3382648493.

The spelling of 39421427 in words is "thirty-nine million, four hundred twenty-one thousand, four hundred twenty-seven".