1308400477 has 16 divisors (see below), whose sum is σ = 1430848000. Its totient is φ = 1191827520.

The previous prime is 1308400469. The next prime is 1308400531. The reversal of 1308400477 is 7740048031.

It is a cyclic number.

It is not a de Polignac number, because 1308400477 - 2³ = 1308400469 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 (1308400417) 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, 85399 + ... + 99547.

It is an arithmetic number, because the mean of its divisors is an integer number (89428000).

Almost surely, 2^1308400477 is an apocalyptic number.

It is an amenable number.

1308400477 is a deficient number, since it is larger than the sum of its proper divisors (122447523).

1308400477 is a wasteful number, since it uses less digits than its factorization.

1308400477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14356.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 1308400477 is about 36171.8188234985. The cubic root of 1308400477 is about 1093.7386634058.

The spelling of 1308400477 in words is "one billion, three hundred eight million, four hundred thousand, four hundred seventy-seven".