400773834 has 12 divisors (see below), whose sum is σ = 868343346. Its totient is φ = 133591272.

The previous prime is 400773809. The next prime is 400773839. The reversal of 400773834 is 438377004.

It can be written as a sum of positive squares in only one way, i.e., 392634225 + 8139609 = 19815^2 + 2853^2 .

It is not an unprimeable number, because it can be changed into a prime (400773839) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11132589 + ... + 11132624.

Almost surely, 2^400773834 is an apocalyptic number.

400773834 is an abundant number, since it is smaller than the sum of its proper divisors (467569512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400773834 is a wasteful number, since it uses less digits than its factorization.

400773834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22265221 (or 22265218 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 400773834 is about 20019.3365024918. The cubic root of 400773834 is about 737.2811317970.

It can be divided in two parts, 4007 and 73834, that added together give a square (77841 = 279²).

The spelling of 400773834 in words is "four hundred million, seven hundred seventy-three thousand, eight hundred thirty-four".