1477879421 has 8 divisors (see below), whose sum is σ = 1574947584. Its totient is φ = 1383545680.

The previous prime is 1477879409. The next prime is 1477879433. The reversal of 1477879421 is 1249787741.

It is an interprime number because it is at equal distance from previous prime (1477879409) and next prime (1477879433).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1477879421 - 2⁶ = 1477879357 is a prime.

It is a super-3 number, since 3×1477879421³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1477879421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1477879441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682490 + ... + 684651.

It is an arithmetic number, because the mean of its divisors is an integer number (196868448).

Almost surely, 2^1477879421 is an apocalyptic number.

It is an amenable number.

1477879421 is a deficient number, since it is larger than the sum of its proper divisors (97068163).

1477879421 is a wasteful number, since it uses less digits than its factorization.

1477879421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367211.

The product of its digits is 790272, while the sum is 50.

The square root of 1477879421 is about 38443.1973306071. The cubic root of 1477879421 is about 1139.0592991209.

The spelling of 1477879421 in words is "one billion, four hundred seventy-seven million, eight hundred seventy-nine thousand, four hundred twenty-one".