400068503 has 6 divisors (see below), whose sum is σ = 422233344. Its totient is φ = 379011924.

The previous prime is 400068491. The next prime is 400068527. The reversal of 400068503 is 305860004.

It is not a de Polignac number, because 400068503 - 2¹⁴ = 400052119 is a prime.

It is a super-2 number, since 2×400068503² = 320109614185322018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400068533) 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, 553751 + ... + 554472.

It is an arithmetic number, because the mean of its divisors is an integer number (70372224).

Almost surely, 2^400068503 is an apocalyptic number.

400068503 is a deficient number, since it is larger than the sum of its proper divisors (22164841).

400068503 is a wasteful number, since it uses less digits than its factorization.

400068503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108261 (or 1108242 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 400068503 is about 20001.7125016834. The cubic root of 400068503 is about 736.8483585288.

The spelling of 400068503 in words is "four hundred million, sixty-eight thousand, five hundred three".