438436029554 has 4 divisors (see below), whose sum is σ = 657654044334. Its totient is φ = 219218014776.

The previous prime is 438436029539. The next prime is 438436029593. The reversal of 438436029554 is 455920634834.

It is a happy number.

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., 402682892329 + 35753137225 = 634573^2 + 189085^2 .

It is a super-2 number, since 2×438436029554² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 438436029496 and 438436029505.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109609007387 + ... + 109609007390.

Almost surely, 2^438436029554 is an apocalyptic number.

438436029554 is a deficient number, since it is larger than the sum of its proper divisors (219218014780).

438436029554 is a wasteful number, since it uses less digits than its factorization.

438436029554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219218014779.

The product of its (nonzero) digits is 12441600, while the sum is 53.

The spelling of 438436029554 in words is "four hundred thirty-eight billion, four hundred thirty-six million, twenty-nine thousand, five hundred fifty-four".