39988454 has 16 divisors (see below), whose sum is σ = 69285456. Its totient is φ = 17107200.

The previous prime is 39988433. The next prime is 39988469. The reversal of 39988454 is 45488993.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53087 + ... + 53834.

It is an arithmetic number, because the mean of its divisors is an integer number (4330341).

Almost surely, 2^39988454 is an apocalyptic number.

39988454 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

39988454 is a deficient number, since it is larger than the sum of its proper divisors (29297002).

39988454 is a wasteful number, since it uses less digits than its factorization.

39988454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106951.

The product of its digits is 1244160, while the sum is 50.

The square root of 39988454 is about 6323.6424630113. The cubic root of 39988454 is about 341.9622805316.

The spelling of 39988454 in words is "thirty-nine million, nine hundred eighty-eight thousand, four hundred fifty-four".