400338254 has 4 divisors (see below), whose sum is σ = 600507384. Its totient is φ = 200169126.

The previous prime is 400338251. The next prime is 400338271. The reversal of 400338254 is 452833004.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400338251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100084562 + ... + 100084565.

It is an arithmetic number, because the mean of its divisors is an integer number (150126846).

Almost surely, 2^400338254 is an apocalyptic number.

400338254 is a deficient number, since it is larger than the sum of its proper divisors (200169130).

400338254 is a wasteful number, since it uses less digits than its factorization.

400338254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200169129.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 400338254 is about 20008.4545630091. The cubic root of 400338254 is about 737.0139309441.

The spelling of 400338254 in words is "four hundred million, three hundred thirty-eight thousand, two hundred fifty-four".