149139456 has 104 divisors (see below), whose sum is σ = 406928880. Its totient is φ = 48562176.

The previous prime is 149139451. The next prime is 149139457. The reversal of 149139456 is 654931941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149139451) 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, 651150 + ... + 651378.

Almost surely, 2^149139456 is an apocalyptic number.

149139456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149139456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203464440).

149139456 is an abundant number, since it is smaller than the sum of its proper divisors (257789424).

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

149139456 is an equidigital number, since it uses as much as digits as its factorization.

149139456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309 (or 287 counting only the distinct ones).

The product of its digits is 116640, while the sum is 42.

The square root of 149139456 is about 12212.2666200833. The cubic root of 149139456 is about 530.3112637030.

The spelling of 149139456 in words is "one hundred forty-nine million, one hundred thirty-nine thousand, four hundred fifty-six".