1400433989 has 8 divisors (see below), whose sum is σ = 1405357632. Its totient is φ = 1395519840.

The previous prime is 1400433967. The next prime is 1400433997. The reversal of 1400433989 is 9893340041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1400433989 is a prime.

It is a super-2 number, since 2×1400433989² = 3922430715092904242, 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 (1400433929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406217 + ... + 409649.

It is an arithmetic number, because the mean of its divisors is an integer number (175669704).

Almost surely, 2^1400433989 is an apocalyptic number.

It is an amenable number.

1400433989 is a deficient number, since it is larger than the sum of its proper divisors (4923643).

1400433989 is an equidigital number, since it uses as much as digits as its factorization.

1400433989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4747.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 1400433989 is about 37422.3728403211. The cubic root of 1400433989 is about 1118.8045250664.

The spelling of 1400433989 in words is "one billion, four hundred million, four hundred thirty-three thousand, nine hundred eighty-nine".