400949254 has 4 divisors (see below), whose sum is σ = 601423884. Its totient is φ = 200474626.

The previous prime is 400949251. The next prime is 400949303. The reversal of 400949254 is 452949004.

It is a happy number.

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 (400949251) 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 as a sum of consecutive naturals, namely, 100237312 + ... + 100237315.

It is an arithmetic number, because the mean of its divisors is an integer number (150355971).

Almost surely, 2^400949254 is an apocalyptic number.

400949254 is a deficient number, since it is larger than the sum of its proper divisors (200474630).

400949254 is a wasteful number, since it uses less digits than its factorization.

400949254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200474629.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 400949254 is about 20023.7172872571. The cubic root of 400949254 is about 737.3886862162.

The spelling of 400949254 in words is "four hundred million, nine hundred forty-nine thousand, two hundred fifty-four".