39971474 has 8 divisors (see below), whose sum is σ = 61419708. Its totient is φ = 19498240.

The previous prime is 39971473. The next prime is 39971513. The reversal of 39971474 is 47417993.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 37736449 + 2235025 = 6143^2 + 1495^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (39971473) 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, 243647 + ... + 243810.

Almost surely, 2^39971474 is an apocalyptic number.

39971474 is a deficient number, since it is larger than the sum of its proper divisors (21448234).

39971474 is a wasteful number, since it uses less digits than its factorization.

39971474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487500.

The product of its digits is 190512, while the sum is 44.

The square root of 39971474 is about 6322.2997398099. The cubic root of 39971474 is about 341.9138720454.

The spelling of 39971474 in words is "thirty-nine million, nine hundred seventy-one thousand, four hundred seventy-four".