39774442 has 4 divisors (see below), whose sum is σ = 59661666. Its totient is φ = 19887220.

The previous prime is 39774439. The next prime is 39774443. The reversal of 39774442 is 24447793.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 27657081 + 12117361 = 5259^2 + 3481^2 .

It is a super-2 number, since 2×39774442² = 3164012472822728, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 39774395 and 39774404.

It is not an unprimeable number, because it can be changed into a prime (39774443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9943609 + ... + 9943612.

Almost surely, 2^39774442 is an apocalyptic number.

39774442 is a deficient number, since it is larger than the sum of its proper divisors (19887224).

39774442 is a wasteful number, since it uses less digits than its factorization.

39774442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19887223.

The product of its digits is 169344, while the sum is 40.

The square root of 39774442 is about 6306.6981852630. The cubic root of 39774442 is about 341.3511459803.

The spelling of 39774442 in words is "thirty-nine million, seven hundred seventy-four thousand, four hundred forty-two".