1420977389 has 16 divisors (see below), whose sum is σ = 1546809600. Its totient is φ = 1297581120.

The previous prime is 1420977353. The next prime is 1420977403. The reversal of 1420977389 is 9837790241.

It is a cyclic number.

It is not a de Polignac number, because 1420977389 - 2¹² = 1420973293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420971389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 523574 + ... + 526280.

It is an arithmetic number, because the mean of its divisors is an integer number (96675600).

Almost surely, 2^1420977389 is an apocalyptic number.

It is an amenable number.

1420977389 is a deficient number, since it is larger than the sum of its proper divisors (125832211).

1420977389 is a wasteful number, since it uses less digits than its factorization.

1420977389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3140.

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 1420977389 is about 37695.8537375134. The cubic root of 1420977389 is about 1124.2486872322.

The spelling of 1420977389 in words is "one billion, four hundred twenty million, nine hundred seventy-seven thousand, three hundred eighty-nine".