427923990 has 48 divisors (see below), whose sum is σ = 1198190448. Its totient is φ = 105334848.

The previous prime is 427923943. The next prime is 427924037. The reversal of 427923990 is 99329724.

It is an interprime number because it is at equal distance from previous prime (427923943) and next prime (427924037).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 181704 + ... + 184043.

It is an arithmetic number, because the mean of its divisors is an integer number (24962301).

Almost surely, 2^427923990 is an apocalyptic number.

427923990 is an abundant number, since it is smaller than the sum of its proper divisors (770266458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

427923990 is a wasteful number, since it uses less digits than its factorization.

427923990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365773 (or 365770 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 427923990 is about 20686.3237429950. The cubic root of 427923990 is about 753.5675894989.

The spelling of 427923990 in words is "four hundred twenty-seven million, nine hundred twenty-three thousand, nine hundred ninety".