148439290 has 8 divisors (see below), whose sum is σ = 267190740. Its totient is φ = 59375712.

The previous prime is 148439243. The next prime is 148439293. The reversal of 148439290 is 92934841.

It can be written as a sum of positive squares in 2 ways, for example, as 146385801 + 2053489 = 12099^2 + 1433^2 .

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

It is not an unprimeable number, because it can be changed into a prime (148439293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7421955 + ... + 7421974.

Almost surely, 2^148439290 is an apocalyptic number.

148439290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

148439290 is a deficient number, since it is larger than the sum of its proper divisors (118751450).

148439290 is a wasteful number, since it uses less digits than its factorization.

148439290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14843936.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 148439290 is about 12183.5663908398. The cubic root of 148439290 is about 529.4800763389.

The spelling of 148439290 in words is "one hundred forty-eight million, four hundred thirty-nine thousand, two hundred ninety".