1421929487 has 32 divisors (see below), whose sum is σ = 1693052928. Its totient is φ = 1179520000.

The previous prime is 1421929433. The next prime is 1421929501. The reversal of 1421929487 is 7849291241.

It is a cyclic number.

It is not a de Polignac number, because 1421929487 - 2⁶ = 1421929423 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 (1421929417) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1463912 + ... + 1464882.

It is an arithmetic number, because the mean of its divisors is an integer number (52907904).

Almost surely, 2^1421929487 is an apocalyptic number.

1421929487 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1421929487 is a deficient number, since it is larger than the sum of its proper divisors (271123441).

1421929487 is a wasteful number, since it uses less digits than its factorization.

1421929487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231.

The product of its digits is 290304, while the sum is 47.

The square root of 1421929487 is about 37708.4803061592. The cubic root of 1421929487 is about 1124.4997247594.

The spelling of 1421929487 in words is "one billion, four hundred twenty-one million, nine hundred twenty-nine thousand, four hundred eighty-seven".