39964546 has 4 divisors (see below), whose sum is σ = 59946822. Its totient is φ = 19982272.

The previous prime is 39964541. The next prime is 39964579. The reversal of 39964546 is 64546993.

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., 35533521 + 4431025 = 5961^2 + 2105^2 .

It is a super-2 number, since 2×39964546² = 3194329873972232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 39964496 and 39964505.

It is not an unprimeable number, because it can be changed into a prime (39964541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9991135 + ... + 9991138.

Almost surely, 2^39964546 is an apocalyptic number.

39964546 is a deficient number, since it is larger than the sum of its proper divisors (19982276).

39964546 is a wasteful number, since it uses less digits than its factorization.

39964546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19982275.

The product of its digits is 699840, while the sum is 46.

The square root of 39964546 is about 6321.7518141730. The cubic root of 39964546 is about 341.8941169889.

The spelling of 39964546 in words is "thirty-nine million, nine hundred sixty-four thousand, five hundred forty-six".