1400233987 has 4 divisors (see below), whose sum is σ = 1417104360. Its totient is φ = 1383363616.

The previous prime is 1400233973. The next prime is 1400234021. The reversal of 1400233987 is 7893320041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7893320041 = 41 ⋅192520001.

It is a cyclic number.

It is not a de Polignac number, because 1400233987 - 2¹¹ = 1400231939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1400233487) 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, 8435062 + ... + 8435227.

It is an arithmetic number, because the mean of its divisors is an integer number (354276090).

Almost surely, 2^1400233987 is an apocalyptic number.

1400233987 is a deficient number, since it is larger than the sum of its proper divisors (16870373).

1400233987 is an equidigital number, since it uses as much as digits as its factorization.

1400233987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16870372.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 1400233987 is about 37419.7005199133. The cubic root of 1400233987 is about 1118.7512621023.

The spelling of 1400233987 in words is "one billion, four hundred million, two hundred thirty-three thousand, nine hundred eighty-seven".