1402001993 has 8 divisors (see below), whose sum is σ = 1612494912. Its totient is φ = 1194060816.

The previous prime is 1402001977. The next prime is 1402002037. The reversal of 1402001993 is 3991002041.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1402001993 - 2⁴ = 1402001977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1402001893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 636755 + ... + 638952.

It is an arithmetic number, because the mean of its divisors is an integer number (201561864).

Almost surely, 2^1402001993 is an apocalyptic number.

It is an amenable number.

1402001993 is a deficient number, since it is larger than the sum of its proper divisors (210492919).

1402001993 is a wasteful number, since it uses less digits than its factorization.

1402001993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275871.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 1402001993 is about 37443.3170672685. The cubic root of 1402001993 is about 1119.2219279709.

The spelling of 1402001993 in words is "one billion, four hundred two million, one thousand, nine hundred ninety-three".