1402001977 has 2 divisors, whose sum is σ = 1402001978. Its totient is φ = 1402001976.

The previous prime is 1402001947. The next prime is 1402002037. The reversal of 1402001977 is 7791002041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1105163536 + 296838441 = 33244^2 + 17229^2 .

It is a cyclic number.

It is not a de Polignac number, because 1402001977 - 2¹⁹ = 1401477689 is a prime.

It is not a weakly prime, because it can be changed into another prime (1402001947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701000988 + 701000989.

It is an arithmetic number, because the mean of its divisors is an integer number (701000989).

Almost surely, 2^1402001977 is an apocalyptic number.

It is an amenable number.

1402001977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1402001977 is an equidigital number, since it uses as much as digits as its factorization.

1402001977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 1402001977 is about 37443.3168536122. The cubic root of 1402001977 is about 1119.2219237133.

The spelling of 1402001977 in words is "one billion, four hundred two million, one thousand, nine hundred seventy-seven".