40379439 has 16 divisors (see below), whose sum is σ = 55752192. Its totient is φ = 25979328.

The previous prime is 40379429. The next prime is 40379459. The reversal of 40379439 is 93497304.

It is not a de Polignac number, because 40379439 - 2¹² = 40375343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40379397 and 40379406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40379429) 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 15 ways as a sum of consecutive naturals, for example, 8332 + ... + 12254.

It is an arithmetic number, because the mean of its divisors is an integer number (3484512).

Almost surely, 2^40379439 is an apocalyptic number.

40379439 is a deficient number, since it is larger than the sum of its proper divisors (15372753).

40379439 is a wasteful number, since it uses less digits than its factorization.

40379439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4046.

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 40379439 is about 6354.4818042072. The cubic root of 40379439 is about 343.0731738474.

The spelling of 40379439 in words is "forty million, three hundred seventy-nine thousand, four hundred thirty-nine".