400535387 has 4 divisors (see below), whose sum is σ = 457754736. Its totient is φ = 343316040.

The previous prime is 400535383. The next prime is 400535423. The reversal of 400535387 is 783535004.

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

It is a cyclic number.

It is not a de Polignac number, because 400535387 - 2² = 400535383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400535381) 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, 28609664 + ... + 28609677.

It is an arithmetic number, because the mean of its divisors is an integer number (114438684).

Almost surely, 2^400535387 is an apocalyptic number.

400535387 is a deficient number, since it is larger than the sum of its proper divisors (57219349).

400535387 is an equidigital number, since it uses as much as digits as its factorization.

400535387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57219348.

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 400535387 is about 20013.3801992567. The cubic root of 400535387 is about 737.1348836007.

The spelling of 400535387 in words is "four hundred million, five hundred thirty-five thousand, three hundred eighty-seven".