338920429 has 4 divisors (see below), whose sum is σ = 338958784. Its totient is φ = 338882076.

The previous prime is 338920411. The next prime is 338920487. The reversal of 338920429 is 924029833.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 924029833 = 41 ⋅22537313.

It is a cyclic number.

It is not a de Polignac number, because 338920429 - 2⁵ = 338920397 is a prime.

It is a super-2 number, since 2×338920429² = 229734114387088082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 338920391 and 338920400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (338920409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1534 + ... + 26080.

It is an arithmetic number, because the mean of its divisors is an integer number (84739696).

Almost surely, 2^338920429 is an apocalyptic number.

It is an amenable number.

338920429 is a deficient number, since it is larger than the sum of its proper divisors (38355).

338920429 is a wasteful number, since it uses less digits than its factorization.

338920429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38354.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 338920429 is about 18409.7916609613. The cubic root of 338920429 is about 697.2137057252.

The spelling of 338920429 in words is "three hundred thirty-eight million, nine hundred twenty thousand, four hundred twenty-nine".