401587794 has 20 divisors (see below), whose sum is σ = 899854494. Its totient is φ = 133862544.

The previous prime is 401587789. The next prime is 401587829. The reversal of 401587794 is 497785104.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 394538769 + 7049025 = 19863^2 + 2655^2 .

It is a super-2 number, since 2×401587794² = 322545512579572872, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1239307 + ... + 1239630.

Almost surely, 2^401587794 is an apocalyptic number.

401587794 is an abundant number, since it is smaller than the sum of its proper divisors (498266700).

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

401587794 is a wasteful number, since it uses less digits than its factorization.

401587794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2478951 (or 2478942 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 401587794 is about 20039.6555359617. The cubic root of 401587794 is about 737.7799264482.

It can be divided in two parts, 4015 and 87794, that added together give a square (91809 = 303²).

The spelling of 401587794 in words is "four hundred one million, five hundred eighty-seven thousand, seven hundred ninety-four".