39220406 has 4 divisors (see below), whose sum is σ = 58830612. Its totient is φ = 19610202.

The previous prime is 39220399. The next prime is 39220409. The reversal of 39220406 is 60402293.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60402293 = 7 ⋅8628899.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39220409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9805100 + ... + 9805103.

It is an arithmetic number, because the mean of its divisors is an integer number (14707653).

Almost surely, 2^39220406 is an apocalyptic number.

39220406 is a deficient number, since it is larger than the sum of its proper divisors (19610206).

39220406 is a wasteful number, since it uses less digits than its factorization.

39220406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19610205.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 39220406 is about 6262.6197393743. The cubic root of 39220406 is about 339.7587850799.

Adding to 39220406 its reverse (60402293), we get a palindrome (99622699).

The spelling of 39220406 in words is "thirty-nine million, two hundred twenty thousand, four hundred six".