1390474977 has 16 divisors (see below), whose sum is σ = 1921800000. Its totient is φ = 893196864.

The previous prime is 1390474949. The next prime is 1390474997. The reversal of 1390474977 is 7794740931.

1390474977 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1390474977 - 2⁷ = 1390474849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1390474907) 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, 27399 + ... + 59427.

It is an arithmetic number, because the mean of its divisors is an integer number (120112500).

Almost surely, 2^1390474977 is an apocalyptic number.

It is an amenable number.

1390474977 is a deficient number, since it is larger than the sum of its proper divisors (531325023).

1390474977 is a wasteful number, since it uses less digits than its factorization.

1390474977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32560.

The product of its (nonzero) digits is 1333584, while the sum is 51.

The square root of 1390474977 is about 37289.0731582323. The cubic root of 1390474977 is about 1116.1461337588.

The spelling of 1390474977 in words is "one billion, three hundred ninety million, four hundred seventy-four thousand, nine hundred seventy-seven".