438700077 has 16 divisors (see below), whose sum is σ = 653200000. Its totient is φ = 290993472.

The previous prime is 438700051. The next prime is 438700099. The reversal of 438700077 is 770007834.

It is a happy number.

It is not a de Polignac number, because 438700077 - 2¹² = 438695981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438700477) 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, 35452 + ... + 46197.

It is an arithmetic number, because the mean of its divisors is an integer number (40825000).

Almost surely, 2^438700077 is an apocalyptic number.

It is an amenable number.

438700077 is a deficient number, since it is larger than the sum of its proper divisors (214499923).

438700077 is a wasteful number, since it uses less digits than its factorization.

438700077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81857 (or 81851 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The square root of 438700077 is about 20945.1683449907. The cubic root of 438700077 is about 759.8407312837.

The spelling of 438700077 in words is "four hundred thirty-eight million, seven hundred thousand, seventy-seven".