39954490 has 8 divisors (see below), whose sum is σ = 71918100. Its totient is φ = 15981792.

The previous prime is 39954479. The next prime is 39954491. The reversal of 39954490 is 9445993.

It can be written as a sum of positive squares in 2 ways, for example, as 37957921 + 1996569 = 6161^2 + 1413^2 .

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

It is a super-2 number, since 2×39954490² = 3192722542320200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39954491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1997715 + ... + 1997734.

Almost surely, 2^39954490 is an apocalyptic number.

39954490 is a deficient number, since it is larger than the sum of its proper divisors (31963610).

39954490 is a wasteful number, since it uses less digits than its factorization.

39954490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3995456.

The product of its (nonzero) digits is 174960, while the sum is 43.

The square root of 39954490 is about 6320.9564149739. The cubic root of 39954490 is about 341.8654384393.

It can be divided in two parts, 39 and 954490, that added together give a square (954529 = 977²).

The spelling of 39954490 in words is "thirty-nine million, nine hundred fifty-four thousand, four hundred ninety".